Sulfur Compounds
Sulfur
Halitosis
Sulfides
Sulfonium Compounds
Sulfur Isotopes
Acidithiobacillus
Tetrathionic Acid
Garlic
Hydrogen Sulfide
Thiotrichaceae
3-Mercaptopropionic Acid
Thiobacillus
Volatilization
Epsilonproteobacteria
Sulfur Dioxide
Sulfinic Acids
Sulfite Dehydrogenase
Petroleum
Oxidation-Reduction
A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471).
Sulfite Reductase (NADPH)
Oxidoreductases Acting on Sulfur Group Donors
Hydrogensulfite Reductase
Chemoautotrophic Growth
Growth of organisms using AUTOTROPHIC PROCESSES for obtaining nutrients and chemotrophic processes for obtaining a primary energy supply. Chemotrophic processes are involved in deriving a primary energy supply from exogenous chemical sources. Chemotrophic autotrophs (chemoautotrophs) generally use inorganic chemicals as energy sources and as such are called chemolithoautotrophs. Most chemoautotrophs live in hostile environments, such as deep sea vents. They are mostly BACTERIA and ARCHAEA, and are the primary producers for those ecosystems.
Chromatiaceae
Cheese
Mustard Gas
Severe irritant and vesicant of skin, eyes, and lungs. It may cause blindness and lethal lung edema and was formerly used as a war gas. The substance has been proposed as a cytostatic and for treatment of psoriasis. It has been listed as a known carcinogen in the Fourth Annual Report on Carcinogens (NTP-85-002, 1985) (Merck, 11th ed).
Brevibacterium
Gas Chromatography-Mass Spectrometry
Molecular Sequence Data
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
Biodegradation, Environmental
Bacteria
One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.
Plant Extracts
Atmosphere
Culture Media
Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN.
Anaerobiosis
Oxidoreductases
The class of all enzymes catalyzing oxidoreduction reactions. The substrate that is oxidized is regarded as a hydrogen donor. The systematic name is based on donor:acceptor oxidoreductase. The recommended name will be dehydrogenase, wherever this is possible; as an alternative, reductase can be used. Oxidase is only used in cases where O2 is the acceptor. (Enzyme Nomenclature, 1992, p9)
RNA, Ribosomal, 16S
Sequence Analysis, DNA
Carbon-Sulfur Lyases
Disulfides
Water Microbiology
Alphaproteobacteria
Geologic Sediments
A mass of organic or inorganic solid fragmented material, or the solid fragment itself, that comes from the weathering of rock and is carried by, suspended in, or dropped by air, water, or ice. It refers also to a mass that is accumulated by any other natural agent and that forms in layers on the earth's surface, such as sand, gravel, silt, mud, fill, or loess. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1689)
DNA, Ribosomal
Odors
Chlorobi
Microbial desulfurization of organic sulfur compounds in petroleum. (1/233)
Sulfur removal from petroleum is important from the standpoint of the global environment because the combustion of sulfur compounds leads to the production of sulfur oxides, which are the source of acid rain. As the regulations for sulfur in fuels become more stringent, the existing chemical desulfurizations are coming inadequate for the "deeper desulfurization" to produce lower-sulfur fuels without new and innovative processes. Biodesulfurization is rising as one of the candidates. Several microorganisms were found to desulfurize dibenzothiophene (DBT), a representative of the organic sulfur compounds in petroleum, forming a sulfur-free compound, 2-hydroxybiphenyl. They are promising as biocatalysts in the microbial desulfurization of petroleum because without assimilation of the carbon content, they remove only sulfur from the heterocyclic compounds which is refractory to conventional chemical desulfurization. Both enzymological and molecular genetic studies are now in progress for the purpose of obtaining improved desulfurization activity of organisms. The genes involved in the sulfur-specific DBT desulfurization were identified and the corresponding enzymes have been investigated. From the practical point of view, it has been proved that the microbial desulfurization proceeds in the presence of high concentrations of hydrocarbons, and more complicated DBT analogs are also desulfurized by the microorganisms. This review outlines the progress in the studies of the microbial desulfurization from the basic and practical point of view. (+info)Overexpression of recombinant proteins with a C-terminal thiocarboxylate: implications for protein semisynthesis and thiamin biosynthesis. (2/233)
A facile and rapid method for the production of protein C-terminal thiocarboxylates on DNA-encoded polypeptides is described. This method, which relies on the mechanism of the cleavage reaction of intein-containing fusion proteins, can produce multi-milligram quantities of protein C-terminal thiocarboxylate quickly and inexpensively. The utility of this method for protein semisynthesis and implications for studies on the biosynthesis of thiamin are discussed. (+info)Heating garlic inhibits its ability to suppress 7, 12-dimethylbenz(a)anthracene-induced DNA adduct formation in rat mammary tissue. (3/233)
The present studies compared the impact of heating, either by microwave or convection oven, on the ability of garlic to reduce the in vivo bioactivation of 7,12-dimethylbenz(a)anthracene (DMBA) in 55-d-old female Sprague-Dawley rats. In study 1, rats were fed a semipurified casein-based diet and treated by gastric gavage thrice weekly for 2-wk with crushed garlic (0.7 g in 2 mL corn oil) or the carrier prior to DMBA treatment (50 mg/kg body weight). Providing crushed garlic reduced by 64% (P < 0.05) the quantity DMBA-induced DNA adducts present in mammary epithelial cells compared to controls. In study 2, microwave treatment for 60 s, but not 30 s, decreased (P < 0.05) the protection provided by garlic against DMBA-induced adduct formation. In study 3, allowing crushed garlic to stand for 10 min prior to microwave heating for 60 s significantly (P < 0.05) restored its anticarcinogenic activity. Microwave heating of garlic for 30 s resulted in a 90% loss of alliinase activity. Heating in a convection oven (study 4) also completely blocked the ability of uncrushed garlic to retard DMBA bioactivation. Study 5 revealed that providing either 0.105 micromol diallyl disulfide or S-allyl cysteine by gastric gavage thrice weekly for 2 wk was effective in retarding DMBA bioactivation but isomolar alliin was not. These studies provide evidence that alliinase may be important for the formation of allyl sulfur compounds that contribute to a depression in DMBA metabolism and bioactivation. (+info)Inhibitory effect of sulfur-containing compounds in Scorodocarpus borneensis Becc. on the aggregation of rabbit platelets. (4/233)
The inhibitory effects of three pure compounds isolated from wood garlic, 2,4,5-trithiahexane (I), 2,4,5,7-tetrathiaoctane (II), and 2,4,5,7-tetrathiaoctane 2,2-dioxide (III), on rabbit platelet aggregation induced by collagen, arachidonic acid, U46619, ADP (adenosine 5'-diphosphate), PAF (platelet aggregating factor), and thrombin were studied in vitro. The anti-aggregating activity of 2,4,5,7-tetrathiaoctane 4,4-dioxide (IV) was also measured with collagen and arachidonic acid. I, II, III, and IV inhibited the platelet aggregation induced by all tested agonists. I, II, and III exhibited a stronger inhibitory effect against the thrombin-induced aggregation of GFP (gel-filtered platelets) than against the aggregation induced by the other agonists. Notably, the IC50 value for III was 4 microM, which is approximately 2.5 times stronger than MATS (methyl allyl trisulfide), a major anti-platelet compound isolated from garlic. In inhibiting collagen-induced aggregation, II was as potent as MATS and aspirin, with a marked disaggregation effect on the secondary aggregation by arachidonic acid, at the rate of 47.05%/min at a concentration of 10(-4) M. I, II, and III also suppressed U46619-induced aggregation. These results suggest that sulfur-containing compounds in wood garlic not only inhibit arachidonic acid metabolism but also suppress aggregation in association with the function of the platelet plasma membrane. (+info)Modulation of fibroblast growth factor-2 receptor binding, signaling, and mitogenic activity by heparin-mimicking polysulfonated compounds. (5/233)
Basic fibroblast growth factor (FGF-2) interacts with high-affinity tyrosine-kinase fibroblast growth factor receptors (FGFRs) and low-affinity heparan sulfate proteoglycans (HSPGs) in target cells. Both interactions are required for FGF-2-mediated biological responses. Here we report the FGF-2 antagonist activity of novel synthetic sulfonic acid polymers with distinct chemical structures and molecular masses (MMs). PAMPS [poly(2-acrylamido-2-methyl-1-propanesulfonic acid)], (MM approximately 7,000-10,000), PAS [poly(anetholesulfonic acid)], (MM approximately 9,000-11,000), PSS [poly(4-styrenesulfonic acid)], (MM = 70,000), and poly(vinylsulfonic acid) (MM = 2,000), inhibited FGF-2 binding to HSPGs and FGFRs in fetal bovine aortic endothelial GM 7373 cells. They also abrogated the formation of the HSPG/FGF-2/FGFR ternary complex, as evidenced by their capacity to prevent FGF-2-mediated cell-cell attachment of FGFR-1-overexpressing, HSPG-deficient Chinese hamster ovary cells to wild-type HSPG-bearing cells. Direct interaction of the polysulfonates with FGF-2 was demonstrated by their ability to protect the growth factor from proteolytic cleavage. Accordingly, molecular modeling, based on the crystal structure of the interaction of FGF-2 with a heparin hexamer, showed the feasibility of docking PAMPS into the heparin-binding domain of FGF-2. In agreement with their FGF-2-binding capacity, PSS, PAS, and PAMPS inhibited FGF-2-induced cell proliferation in GM 7373 cells and murine brain microvascular endothelial cells. The antiproliferative activity of these compounds was associated with the abrogation of FGF-2-induced tyrosine phosphorylation of FGFR-1. Moreover, the polysulfonates PSS and PAS inhibited FGF-2-induced activation of mitogen-activated protein kinase-1/2, involved in FGF-2 signal transduction. In conclusion, sulfonic acid polymers bind FGF-2 by mimicking heparin interaction. These compounds may provide a tool to inhibit FGF-2-induced endothelial cell proliferation in angiogenesis and tumor growth. (+info)Effects of nonsulfur and sulfur amino acids on the regulation of hepatic enzymes of cysteine metabolism. (6/233)
To determine the role of nonsulfur vs. sulfur amino acids in regulation of cysteine metabolism, rats were fed a basal diet or diets supplemented with a mixture of nonsulfur amino acids (AA), sulfur amino acids (SAA), or both for 3 wk. Hepatic cysteine-sulfinate decarboxylase (CSDC), cysteine dioxygenase (CDO), and gamma-glutamylcysteine synthetase (GCS) activity, concentration, and mRNA abundance were measured. Supplementation with AA alone had no effect on any of these measures. Supplementation of the basal diet with SAA, with or without AA, resulted in a higher CDO concentration (32-45 times basal), a lower CSDC mRNA level (49-64% of basal), and a lower GCS-heavy subunit mRNA level (70-76%). The presence of excess SAA and AA together resulted in an additional type of regulation: a lower specific activity of all three enzymes was observed in rats fed diets with an excess of AA and SAA. Both SAA and AA played a role in regulation of these three enzymes of cysteine metabolism, but SAA had the dominant effects, and effects of AA were not observed in the absence of SAA. (+info)Transformation of sulfur compounds by an abundant lineage of marine bacteria in the alpha-subclass of the class Proteobacteria. (7/233)
Members of a group of marine bacteria that is numerically important in coastal seawater and sediments were characterized with respect to their ability to transform organic and inorganic sulfur compounds. Fifteen strains representing the Roseobacter group (a phylogenetic cluster of marine bacteria in the alpha-subclass of the class Proteobacteria) were isolated from seawater, primarily from the southeastern United States. Although more than one-half of the isolates were obtained without any selection for sulfur metabolism, all of the isolates were able to degrade the sulfur-containing osmolyte dimethyl sulfoniopropionate (DMSP) with production of dimethyl sulfide (DMS). Five isolates also degraded DMSP with production of methanethiol, indicating that both cleavage and demethylation pathways for DMSP occurred in the same organism, which is unusual. Five isolates were able to reduce dimethyl sulfoxide to DMS, and several isolates also degraded DMS and methanethiol. Sulfite oxygenase activity and methanesulfonic acid oxygenase activity were also present in some of the isolates. The ability to incorporate the reduced sulfur in DMSP and methanethiol into cellular material was studied with one of the isolates. A group-specific 16S rRNA probe indicated that the relative abundance of uncultured bacteria in the Roseobacter group increased in seawater enriched with DMSP or DMS. Because this group typically accounts for >10% of the 16S ribosomal DNA pool in coastal seawater and sediments of the southern United States, clues about its potential biogeochemical role are of particular interest. Studies of culturable representatives suggested that the group could mediate a number of steps in the cycling of both organic and inorganic forms of sulfur in marine environments. (+info)An anti-platelet agent, OPC-29030, inhibits translocation of 12-lipoxygenase and 12-hydroxyeicosatetraenoic acid production in human platelets. (8/233)
1. In human platelets, arachidonic acid is mainly metabolized by the two enzyme systems; cyclo-oxygenase and 12-lipoxygenase. Cyclo-oxygenase produces prostaglandin H(2) which is further converted to thromboxane B(2). 12-Lipoxygenase synthesizes 12(S)-hydroperoxyeicosatetraenoic acid which is reduced to 12(S)-hydroxyeicosatetraenoic acid (12(S)-HETE). 2. An anti-platelet compound, OPC-29030, dose-dependently inhibited 12(S)-HETE production with an IC(50) of 0.06+/-0.01 microM, but not synthesis of thromboxane B(2) in human platelets. Although the compound suppressed 12(S)-HETE production in human platelets, cytosolic 12-lipoxygenase activity was not inhibited up to 10 microM. Essentially identical data were obtained with a 12-lipoxygenase of human erythroleukaemia cells which had megakaryocyte/platelet-like properties. 3. OPC-29030 also suppressed production of 5(S)-HETE, a 5-lipoxygenase product, in rat basophilic leukaemia cells without inhibiting enzyme activity. It has been shown that 5-lipoxygenase binds to membrane 5-lipoxygenase-activating protein (FLAP) to produce 5(S)-HETE, and thus FLAP inhibitor suppresses cellular 5(S)-HETE production. 4. A FLAP inhibitor, L-655,238, suppressed platelet 12(S)-HETE production, but had no effect on the 12-lipoxygenase activity. 5. Western blot analysis showed that platelet 12-lipoxygenase translocated from cytosol to membranes upon thrombin stimulation, and OPC-29030 suppressed this process in a dose-dependent manner. 6. These results suggest that the 12-lipoxygenase of human platelets binds to FLAP or a similar protein, and OPC-29030 suppresses 12(S)-HETE production by inhibiting a certain step of the 12-lipoxygenase translocation. (+info) Halitosis, commonly known as bad breath, is a condition where an individual experiences unpleasant odors emanating from their mouth. It can be caused by a variety of factors, including:
1. Poor oral hygiene: When individuals fail to brush and floss regularly, bacteria can accumulate on the teeth, tongue, and gums, leading to bad breath.
2. Gum disease and other oral infections: Gingivitis, periodontitis, and other oral infections can cause bad breath due to the buildup of bacteria and tartar.
3. Dry mouth (xerostomia): A lack of saliva can lead to an increase in bacteria growth and bad breath.
4. Food particles: Eating certain foods, such as garlic or onions, can cause bad breath due to the lingering presence of particles in the mouth.
5. Smoking and tobacco use: Smoking and using other forms of tobacco can lead to bad breath due to the chemicals present in tobacco products.
6. Medical conditions: Certain medical conditions, such as sinus infections, bronchitis, and pneumonia, can cause bad breath.
7. Diet: Consuming certain foods or drinks, such as coffee, tea, or alcohol, can cause bad breath due to their acidic properties.
8. Hormonal changes: Hormonal fluctuations during pregnancy, menstruation, or menopause can lead to changes in the mouth's ecosystem and contribute to bad breath.
9. Dental appliances: Poorly fitting dentures, braces, or other dental appliances can contribute to bad breath.
10. Medications: Certain medications, such as antidepressants and antihistamines, can cause dry mouth and lead to bad breath.
Treatment for halitosis depends on the underlying cause and may include improved oral hygiene, antibiotics, mouthwashes, or other therapies. It is essential to consult a healthcare professional for an accurate diagnosis and appropriate treatment.
Reactive sulfur species
... (RSS) are a family of sulfur-based chemical compounds that can oxidize and inhibit thiol-proteins and ... Reactive oxygen species Reactive nitrogen species Reactive carbonyl species Giles, GI; Jacob, C (2002). "Reactive sulfur ... Mishanina, Tatiana V.; Libiad, Marouane; Banerjee, Ruma (2015). "Biogenesis of reactive sulfur species for signaling by ...
Polythionates
Sulfur compounds). ... P. W. Schenk (1963). "Sulfur, Selenium, Tellurium". In G. ... ISBN 978-0-08-037941-8. P. W. Schenk (1963). "Sulfur, Selenium, Tellurium". In G. Brauer (ed.). Handbook of Preparative ... More specialized routes involve reactions of sulfur chlorides with bisulfite salts: SCl2 + 2 HSO−3 → [O3SSSO3]2− + 2 HCl S2Cl2 ...
Thiosulfurous acid
ACD Chemsketch Name Free Schmidt, Heinar; Ralf Steudel; Detlev Suelzle; Helmut Schwarz (1992). "Sulfur compounds. 148. ... Miaskiewicz, Karol; Ralf Steudel (1991). "Sulphur compounds. Part 140. Structures and relative stabilities of seven isomeric ... Four isomers are possible for R2S2O2, at least restricting sulfur to di- and tetravalency: (RO)2S=S, ROSSOR, RS(O)2SR, and RS(O ... Thiosulfurous acid (HS−S(=O)−OH) is a hypothetical compound with the formula S2(OH)2. Attempted synthesis leads to polymers. It ...
Dihydroxydisulfane
Schmidt, Heinar; Steudel, Ralf; Suelzle, Detlev; Schwarz, Helmut (March 1992). "Sulfur compounds. 148. Generation and ... Dihydroxydisulfane or hypodithionous acid is a reduced sulfur oxyacid with sulfur in a formal oxidation state of +1. The ... Unlike many of these other reduced sulfur acids, dihydroxydisulfane can be formed in a pure state by reacting hydrogen sulfide ... Related compounds include the isoelectronic substances hydrogen tetroxide HOOOOH, hydroxotrisulfane HOSSSH, HSOSSH, and ...
Sodium sulfite
Weil, Edward D.; Sandler, Stanley R. (1999). "Sulfur Compounds". In Kroschwitz, Jacqueline I. (ed.). Kirk-Othmer Concise ... Sodium sulfite can be prepared by treating a solution of sodium hydroxide with sulfur dioxide. When conducted in warm water, ... Sodium sulfite (sodium sulphite) is the inorganic compound with the chemical formula Na2SO3. A white, water-soluble solid, it ... Sodium sulfite is made industrially by treating sulfur dioxide with a solution of sodium carbonate. The overall reaction is: SO ...
Thiosulfoxide
Many compounds containing a sulfur-sulfur double bond have been reported in the past although only a few verified classes of ... A thiosulfoxide is a chemical compound containing a sulfur to sulfur double bond of the type RR'S=S, with R and R' both alkyl ... Heating to 200 °C extrudes sulfur in this compound and forms the corresponding azo compound. Disulfur monoxide S=S=O is stable ... Gerald W. Kutney; Kenneth Turnbull (1982). "Compounds containing the sulfur-sulfur double bond". Chem. Rev. 82 (4): 333-357. ...
Sulfoxylic acid
Koritsanszky, Tibor; Juergen Buschmann; Peter Luger; Heinar Schmidt; Ralf Steudel (1994). "Sulfur compounds. Part 173. ... Sulfoxylic acid contains sulfur in an oxidation state of +2. Sulfur monoxide (SO) can be considered as a theoretical anhydride ... Steiger, Thomas; Steudel, Ralf (May 1992). "Sulphur compounds Part 149. Structures, relative stabilities and vibrational ... Sulfoxylate is oxidised to sulfur dioxide radical anion and then to sulfur dioxide. SO2− 2 + O2 → SO•− 2 + O•− 2 SO•− 2 + O2 → ...
Microbial oxidation of sulfur
The oxidation of reduced sulfur compounds is performed exclusively by Bacteria and Archaea. All the Archaea involved in this ... "Thiosulfate and sulfur oxidation in purple sulfur bacteria.". In Friedrich C, Dahl C (eds.). Microbial Sulfur Metabolism. ... Kelly DP, Shergill JK, Lu WP & Wood AP (1997). "Oxidative metabolism of inorganic sulfur compounds by bacteria". Antonie van ... doi:10.1111/j.1574-6968.1987.tb02332.x. Rabenstein A, Rethmeier J, Fischer U (2014). "Sulphite as Intermediate Sulphur Compound ...
Lower sulfur oxides
Elemental Sulfur und Sulfur-Rich Compounds II. Berlin-Heidelberg: Springer. doi:10.1007/b13185. ISBN 9783540449515. Meschi, D.J ... The lower sulfur oxides are a group of inorganic compounds with the formula SmOn, where 2m > n. These species are often ... Some compounds reported by early workers such as the blue "sesquioxide", S2O3, formed by dissolving sulfur in liquid SO3 ... Sulfur monoxide (SO) and its dimer (S2O2) have been trapped at low temperature. Disulfur dioxide (S2O2) is a dimer of sulfur ...
Metal sulfur dioxide complex
... metal sulfur dioxide complexes are complexes that contain sulfur dioxide, SO2, bonded to a transition metal. Such compounds are ... doi:10.1016/S0010-8545(99)00191-5. Schenk, W. A. (1987). "Sulfur Oxides as Ligands in Coordination Compounds". Angew. Chem. Int ... ISBN 978-0-471-62978-8. Wojcicki, A. (1974). "Insertion Reactions of Transition Metal-Carbon σ-Bonded Compounds II. Sulfur ... Historically, the study of these compounds has provided insights into the mechanisms of migratory insertion reactions. . Sulfur ...
TRNA (guanine-N7-)-methyltransferase
Natural Sulfur Compounds. New York: Plenum Press. p. 25. Portal: Biology v t e (EC 2.1.1, Enzymes of known structure, All stub ...
Hydroxylamine-O-sulfonic acid
Also sulfur compounds (such as thioethers) can be aminated with hydroxylamine-O-sulfonic acid to sulfinimines (isosteric with ... Wiberg, Egon; Wiberg, Nils (2001). "Sulfur Compounds of Nitrogen". Inorganic Chemistry. Academic Press. pp. 675-677. ISBN 978-0 ... Compounds with One Saturated Carbon-Heteroatom Bond: Amine N-Oxides, Haloamines, Hydroxylamines and Sulfur Analogues, and ... Hydroxylamine-O-sulfonic acid (HOSA) is the inorganic compound with molecular formula H3NO4S that is formed by the sulfonation ...
Trifluorosulfate
ISBN 978-3-527-61508-7. (Fluorine compounds, Sulfur compounds). ... On the equator are two oxygen atoms with a bond to sulfur of ...
Anthony Joseph Arduengo III
A. J. Arduengo; E. M. Burgess (1977). "Tricoordinate hypervalent sulfur compounds". J. Am. Chem. Soc. 99 (2): 2376-2377. doi: ... K. Akiba; Y. Yamamoto (1988). "Chemistry of hypervalent organic compounds. Fundamental aspects of hypervalent organic compounds ... and low-coordinate hypervalent sulfur compounds. Thiocarbonyl ylide from Arduengo's Ph.D. dissertation. external viewer. ... Germanium compound used by Arduengo, Dixon, and Roe to verify Edge Inversion at 4-coordinate centers. external viewer. First ...
Asparagusic acid
It is found in asparagus and is believed to be the metabolic precursor to odorous sulfur compounds responsible for the ... Parry, R. J.; Mizusawa, A. E.; Chiu, I. C.; Naidu, M. V.; Ricciardone, M. (1985). "Biosynthesis of sulfur compounds. ... Most studies of the compounds responsible for the odour of asparagus urine have correlated the appearance of the compounds ... It is a derivative of the cyclic disulfide organic compound 1,2-dithiolane with a carboxylic acid functional group bound to ...
Sulfur
... oxidizers can use as energy sources reduced sulfur compounds, including hydrogen sulfide, elemental sulfur, sulfite, ... The two principal sulfur oxides are obtained by burning sulfur: S + O2 → SO2 (sulfur dioxide) 2 SO2 + O2 → 2 SO3 (sulfur ... They use sulfur as the electron acceptor, and reduce various oxidized sulfur compounds back into sulfide, often into hydrogen ... Sulfur is used in matches, insecticides, and fungicides. Many sulfur compounds are odoriferous, and the smells of odorized ...
Disulfur decafluoride
Biological Interactions of Sulfur Compounds. CRC Press. p. 14. ISBN 978-0-7484-0245-8. "Sulfur Pentaflu". 1988 OSHA PEL Project ... Each sulfur atom of the S2F10 molecule is octahedral, and surrounded by five fluorine atoms and one sulfur atom. The two sulfur ... S 2F 10 + N 2F 4 → 2 SF 5NF 2 In the presence of excess chlorine gas, S 2F 10 reacts to form sulfur chloride pentafluoride (SF ... In the S2F10 molecule, the oxidation state of each sulfur atoms is +5, but their valency is 6 (they are hexavalent). S2F10 is ...
Ethane-1,1-dithiol
"Sulfur Compounds in Still and Sparkling Wines and in Grappa: Analytical and Technological Aspects". Volatile Sulfur Compounds ... This molecule has a ring with four sulfur atoms and two carbons, two ethane-1,1-dithiol molecules become linked at their sulfur ... "Changes in the content of lipid autoxidation and sulfur-containing compounds in cooked beef during storage". Journal of ... oxidation of the sulfur to an ethyl sulfonate, glucuronidation of the sulfur, or combination with cysteine by way of a ...
Selenium disulfide
Mitchell, Stephen C. (2003). Biological Interactions Of Sulfur Compounds. CRC Press. p. 174. ISBN 9780203362525. Archived from ... However, as used in proprietary formulations, it is not a pure chemical compound but a mixture of eight-membered-ring compounds ... Mitchell, S. C.; Nickson, R. M.; Waring, R. H. (August 1993). "The Biological Activity of Selenium Sulfide". Sulfur Reports. 13 ... Selenium disulfide, also known as selenium sulfide, is a chemical compound and medication used to treat seborrheic dermatitis, ...
Thiazyl trifluoride
Sulfur-nitrogen compounds, All stub articles, Inorganic compound stubs). ... It has tetrahedral molecular geometry around the sulfur atom, and is regarded to be a prime example of a compound that has a ... Thiazyl trifluoride is a chemical compound of nitrogen, sulfur, and fluorine, having the formula NSF3. It exists as a stable, ... ISBN 978-0-85404-366-8. Steve Mitchell (1996). Steve Mitchell (ed.). Biological interactions of sulfur compounds. CRC Press. p ...
Sulfur assimilation
Less is known about the content of secondary sulfur compounds in the seedling stage of the plant. It is assumed that alliins ... Cysteine is sulfur donor for the synthesis of methionine, the major other sulfur-containing amino acid present in plants. This ... Sulfur gases are potentially phytotoxic, however, they may also be metabolized and used as sulfur source and even be beneficial ... Brassica species contain glucosinolates, which are sulfur-containing secondary compounds. Glucosinolates are composed of a β- ...
Sulfur metabolism
... and other sulfur compounds. Animals obtain sulfur from cysteine and methionine in the protein that they consume. Sulfur is the ... Sulfur is the sole energy source for some lithotrophic bacteria and archaea. Reduced sulfur compounds, such as hydrogen sulfide ... Sulfur oxidizers use enzymes such as Sulfide:quinone reductase, sulfur dioxygenase and sulfite oxidase to oxidize sulfur ... Reduced sulfur compounds are oxidized by most organisms, including higher animals and higher plants. Some organisms can ...
Sulfur inlay
Niello uses the darkening effect of sulfur compounds on silver. Mass, Jennifer L; Anderson, Mark J (2003). "Pennsylvania German ... On cooling, sulfur also expands slightly, locking it into place. The colour of the sulfur inlay is a pale yellow or off-white. ... Sulfur is used as it has a low melting point, easily achieved on a hotplate. This also reduces the risk of charring the wood ... Sulfur has also been used as a historical hot-melt glue for setting ironwork into stone, or for bonding stone together. ...
Iron-sulfur world hypothesis
Heinen, Wolfgang; Anne Marie Lauwers (1996-04-01). "Organic sulfur compounds resulting from the interaction of iron sulfide, ... "Primordial carbonylated iron-sulfur compounds and the synthesis of pyruvate". Science. 289 (5483): 1337-40. Bibcode:2000Sci... ... The iron-sulfur world hypothesis is a set of proposals for the origin of life and the early evolution of life advanced in a ... The carbon fixation metabolism became autocatalytic by forming a metabolic cycle in the form of a primitive sulfur-dependent ...
Sulfur dichloride
... is the chemical compound with the formula SCl2. This cherry-red liquid is the simplest sulfur chloride and ... Reaction with ammonia affords sulfur nitrides related to S4N4. Treatment of SCl2 with primary amines gives sulfur diimides. One ... SCl2 is also a precursor to several inorganic sulfur compounds. Treatment with fluoride salts gives SF4 via the decomposition ... SCl2 is produced by the chlorination of either elemental sulfur or disulfur dichloride. The process occurs in a series of steps ...
Sulfolene
The compound is used as a source of butadiene. Sulfolene is formed by the cheletropic reaction between butadiene and sulfur ... 20 bar and 60 °C gives sulfolane in yields of up to 65% only because of the poisoning of the catalyst by sulfur compounds. 3- ... Houben-Weyl (1955). Volume IX: Sulfur, Selenium, Tellurium Compounds. Methods of Organic Chemistry (4th ed.). Stuttgart: Georg ... The compound is unaffected by acids. It can even be recrystallized from conc. HNO3. The protons in the 2- and 5-positions ...
Sulfinyl nitrene
A sulfinyl nitrene is a chemical compound with generic formula R-S(O)N, with oxygen and nitrogen both bonded to the sulfur atom ... Sulfinyl nitrenes have a resonance structure between sulfur in a +6 oxidation state and a triple bond to nitrogen, or sulfur ... with elemental sulphur and with S 4 N 4". Canadian Journal of Chemistry. 67 (11): 1788-1794. doi:10.1139/v89-277. (Sulfur ... They can be formed by a tri-tert-butoxy metal reaction with a trimethylsilyl compound: KOtBu + Me3SiNSO → K[NSO] + Me3SiOtBu ...
Allium ochotense
Biological Interactions Of Sulfur Compounds (preview). CRC Press. p. 157. ISBN 978-0748-40245-8., citing Nisimura et al. 1988 ... "Thermochemical transformation of sulfur compounds in Japanese domestic Allium, Allium victorialis L". BioFactors. 13 (1-4): 257 ... Researchers have identified 1-propenyl disulfides and vinyldithiins as odor compounds. Specific odor agents include: "methyl ...
Trisulfur
Steudel, Ralf (2003). "Cluster anions S− n and S2− n". Elemental Sulfur and Sulfur-Rich Compounds. Vol. 2. p. 16. ISBN ... The S 3 molecule, known as trisulfur, sulfur trimer, thiozone, or triatomic sulfur, is a cherry-red allotrope of sulfur. It ... Above 1,200 °C (2,190 °F) S 3 is the second most common molecule after S 2 in gaseous sulfur. In liquid sulfur the molecule is ... Formation of compounds with a defined number of sulfur atoms is possible: S 3 + S 2O → S 5O (cyclic) Although S 3 is elusive ...
Barton-Kellogg reaction
An approach to "tetravalent sulfur" compounds". Tetrahedron Lett. 11 (23): 1987. doi:10.1016/S0040-4039(01)98134-1. ^ R. M. ... The diazo compound can be obtained from a ketone by reaction with hydrazine to a hydrazone followed by oxidation. Many reagents ... The Barton-Kellogg reaction is a coupling reaction between a diazo compound and a thioketone, giving an alkene by way of an ... In the reaction mechanism for this reaction, the diazo compound reacts as a 1,3-dipole in a 1,3-dipolar cycloaddition with the ...
Sulfide
... (British English also sulphide) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing ... Sulfide also refers to chemical compounds large families of inorganic and organic compounds, e.g. lead sulfide and dimethyl ... Most often in sulfur chemistry and in biochemistry, the disulfide term is commonly ascribed to the sulfur analogue of the ... Sulfide compounds can be prepared in several different ways: Direct combination of elements: Example: Fe(s) + S(s) → FeS(s) ...
Incendiary device
... animal fat and other similar compounds. Substances such as quicklime and sulfur could be toxic and blinding. Incendiary ... Sulfur- and oil-soaked materials were sometimes ignited and thrown at the enemy, or attached to spears, arrows or bolts, and ... A variety of pyrophoric materials can also be used: selected organometallic compounds, most often triethylaluminium, ...
7α-Thioprogesterone
It is a derivative of progesterone (pregn-4-ene-3,20-dione) with a thio (sulfur) substitution at the C7α position, and is ... Spironolactone is the derivative of this compound in which the acetyl group at the C17β position has been cyclized with the C17 ... Organosulfur compounds, Pregnanes, Steroidal antiandrogens, All stub articles, Steroid stubs, Genito-urinary system drug stubs) ...
Qualitative inorganic analysis
The compounds formed are, respectively, copper(II) carbonate, iron(II) carbonate, iron(III) oxide, calcium carbonate, zinc ... In addition, they form a cloudy precipitate of sulfur. Nitrites give reddish-brown fumes of NO2 when treated with dilute H2SO4 ... The chlorides of these elements cannot be distinguished from each other by their colour - they are all white solid compounds. ... Sulfites produce SO2 gas, which smells of burning sulfur, when treated with dilute acid. They turn acidified K2Cr2O7 from ...
Molybdopterin
Sulfur is conveyed from cysteinyl persulfide in a manner reminiscent of the biosynthesis of iron-sulfur proteins. The ... Webarchive template wayback links, CS1 maint: uses authors parameter, Chemical articles with multiple compound IDs, Multiple ... ISBN 978-0-306-45053-2. Stiefel, E. I. (1998). "Transition metal sulfur chemistry and its relevance to molybdenum and tungsten ... Lassner, Erik (1999). Tungsten: Properties, Chemistry, Technology of the Element, Alloys and Chemical Compounds. Springer. pp. ...
Comproportionation
... two gaseous compounds of sulfur comproportionate in the presence of a catalyst to give elemental sulfur: 2 H2S + SO2 → 3 S + 2 ... ISBN 0-7167-4878-9. G. G. Graf (2005). "Tin, Tin Alloys, and Tin Compounds". Ullmann's Encyclopedia of Industrial Chemistry. ... form a compound having an intermediate oxidation number. It is the opposite of disproportionation. The tendency of two species ...
Metabolism
These organisms can use hydrogen, reduced sulfur compounds (such as sulfide, hydrogen sulfide and thiosulfate), ferrous iron ( ... oxygen and sulfur. Organic compounds (proteins, lipids and carbohydrates) contain the majority of the carbon and nitrogen; most ... These compounds are made by the assembly and modification of isoprene units donated from the reactive precursors isopentenyl ... The fats are a large group of compounds that contain fatty acids and glycerol; a glycerol molecule attached to three fatty ...
Food web
... obtain energy by the chemical oxidation of inorganic compounds and can grow in dark environments, such as the sulfur bacterium ... For example, certain plant species in the Castilleja and Plantago genera have been found to produce defensive compounds called ... The field of chemical ecology has elucidated multitrophic interactions that entail the transfer of defensive compounds across ... Thiobacillus, which lives in hot sulfur springs. The top level has top (or apex) predators which no other species kills ...
Indinavir
brands, Piperazines, 3-Pyridyl compounds, Secondary alcohols, Tert-butyl compounds). ... C at which it starts to emit toxic vapors such as nitrogen oxides and sulfur oxides. The drug fits inside the protease, ... After much research, in March, 1990, researchers under Reider received a patent to synthesize part of L-689, 502 compound. ... which was assigned compound number L-735,524. They started to test L-735,524 on animals a couple months later and found that it ...
Equine anatomy
Additionally, the stomach absorbs some water, as well as ions and lipid-soluble compounds. The horse's small intestine is 15 to ... The horse's hoof contains a high proportion of sulfur-containing amino acids which contribute to its resilience and toughness. ...
S-Nitrosotriphenylmethanethiol
Nitroso compounds, Sulfur compounds). ... The green compound can be produced by the reaction of ... S-Nitrosotriphenylmethanethiol is the organosulfur compound with the formula (C6H5)3CSNO. It is a rare example of a ...
Extractive metallurgy
Typically, these reactions are oxidation, e.g. of sulfide to sulfur dioxide . Often, however, energy must be added to the ... Solids containing valuable metals are treated to form intermediate compounds for further processing or converted into their ... of purification and concentration before the valuable metal is recovered either in its metallic state or as a chemical compound ...
Sulfolobus
... or chemoheterotrophically using sulfur to oxidize simple reduced carbon compounds. Heterotrophic growth has only been observed ... their energy comes from the oxidation of sulfur and/or cellular respiration in which sulfur acts as the final electron acceptor ... Brock TD; Brock KM; Belly RT; Weiss RL (1972). "Sulfolobus: a new genus of sulfur-oxidizing bacteria living at low pH and high ... They thrive in environments where the temperature is about 80 °C with a pH at about 3 and sulfur present. Another species, S. ...
Alkylbenzene sulfonates
The salt of the linear material has an LD50 of 2.3 mg/liter for fish, about four times more toxic than the branched compound; ... The purified dodecylbenzenes (and related derivatives) are then sulfonated with sulfur trioxide to give the sulfonic acid. The ... Propylene tetramer being a broad term for a mixture of compounds formed by the oligomerization of propene, its use gave a ... however the linear compound biodegrades far more quickly, making it the safer choice over time. It is biodegraded rapidly under ...
Arhodomonas aquaeolei
Although A. aquaeolei is most closely related to purple sulfur bacteria, it does not share those organisms' phototrophic traits ... A. aquaeolei has been shown to degrade phenol and phenol based compounds, indicating possible industrial uses. A. aquaeolei ...
Calcite
Several well formed milky white casts, made up of many small sharp calcite crystals, from the sulfur mines at Agrigento, Sicily ... Trilobites, which became extinct a quarter billion years ago, had unique compound eyes that used clear calcite crystals to form ... Manganese may be responsible for the fluorescence of impure calcite, as may traces of organic compounds. Ancient Egyptians ... Journal of Alloys and Compounds. 536: S477-S479. doi:10.1016/j.jallcom.2011.11.057. Bots, P.; Benning, L. G.; Rodriguez-Blanco ...
Phototroph
If their electron and hydrogen donors are inorganic compounds (e.g. Na 2S 2O 3, as in some purple sulfur bacteria, or H 2S, as ... Photoheterotrophs produce ATP through photophosphorylation but use environmentally obtained organic compounds to build ... are organisms that carry out photon capture to produce complex organic compounds (e.g. carbohydrates) and acquire energy. They ... photoheterotrophs are organisms that depend solely on light for their energy and principally on organic compounds for their ...
Conservation and restoration of woodblock prints
The pigments were composed of both light-stable inorganic materials such as metals and earth compounds as well as organic ... For example, when exposed to sulfur-containing gases, red lead pigments will turn a metallic brown/black color. Insects and ...
Mineral (nutrient)
... as compounds), a combination of vitamins and/or other chemical compounds, or a single element (as a compound or mixture of ... The other major minerals (potassium, sodium, chlorine, sulfur and magnesium) make up only about 0.85% of the weight of the body ... Most chemical elements that are ingested by organisms are in the form of simple compounds. Plants absorb dissolved elements in ... compounds), such as calcium (calcium carbonate, calcium citrate) or magnesium (magnesium oxide), or iron (ferrous sulfate, iron ...
Environmental effects of shipping
Sulfur in the air creates acid rain which damages crops and buildings. When inhaled, sulfur is known to cause respiratory ... thus leaving a sludge that contains soot and various acidic compounds (or neutralized compounds, if alkaline substances are ... Ultra-low sulfur diesel (ULSD) is a standard for defining diesel fuel with substantially lowered sulfur contents. As of 2006, ... In contrast to sulfur emissions (which depend on the fuel used), nitrous oxide emissions are primarily a function of combustion ...
Difluorodisulfanedifluoride
... is an unstable molecular compound of fluorine and sulfur. The molecule has a pair of sulfur atoms, with one fluorine atom on ... The other known sulfur fluorides are sulfur difluoride, sulfur tetrafluoride, sulfur hexafluoride, disulfur decafluoride, ... hydrogen fluoride catalyses disproportionation to sulfur and sulfur tetrafluoride by forming a reactive intermediate HSF ... However it may disproportionate rapidly to sulfur and sulfur tetrafluoride. ...
1-Naphthalenethiol
Treatment of that reagent with elemental sulfur followed by acidification gave the compound. It has been produced by the iodine ... "Contribution to the Study of Sulphur and Selenium Compounds of the Aromatic Series". Annales de Chimie et de Physique. 15: 5-66 ... 1-Naphthalenethiol is an organosulfur compound with the formula C10H7SH. It is a white solid. It is one of two monothiols of ... Oae Shigeru; Togo Hideo (1983). "Reduction of Sulfonic Acids and Related Organosulfur Compounds with the Triphenylphosphine- ...
Aleph (psychedelic)
"Sulfur-Substituted α-Alkyl Phenethylamines as Selective and Reversible MAO-A Inhibitors: Biological Activities, CoMFA Analysis ... is a psychedelic hallucinogenic drug and a substituted amphetamine of the phenethylamine class of compounds, which can be used ... Chemical articles with multiple compound IDs, Multiple chemicals in an infobox that need indexing, Articles without KEGG source ...
1,2,4,5-Tetrabromobenzene
The compound is a white solid. 1,2,4,5-Tetrabromobenzene is an important metabolite of the flame retardant hexabromobenzene. ... The endoxide reacts with 3-sulfolene in a Diels-Alder reaction upon elimination of sulfur dioxide. The resulting tricyclic ... 1,2,4,5-Tetrabromobenzene is an organobromine compound with the formula C6H2Br4. It is one of three isomers of ... Due to their pronounced π-conjugation such compounds could be potentially applied as optical brighteners, OLED materials or ...
Titanyl sulfate
Titanium compounds, Sulfates, All stub articles, Inorganic compound stubs). ... The structure consists of dense polymeric network with tetrahedral sulfur and octahedral titanium centers. The six ligands ... Titanyl sulfate is the inorganic compound with the formula TiOSO4. It is a white solid that forms by treatment of titanium ... and Titanium Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a27_095.{{ ...
Tropodithietic acid
Aromatic compounds, Sulfur heterocycles, Disulfides, Carboxylic acids, All stub articles, Aromatic compound stubs). ...
Sumatriptan
... due to the integration of sulfur into the hemoglobin molecule. If sumatriptan is discontinued, the condition reverses within a ... Dimethylamino compounds). ...
Carnarvonia araliifolia
The large leaves are pedately compound and highly variable, having anything from 3 to 20 leaflets. They range in size from 5 to ... Both varieties grow in well developed rainforest The fruits are eaten by Sulphur-crested cockatoos (Cacatua galerita) and ...
Sterling silver
... silver sulfide slowly appears as a black tarnish during exposure to airborne compounds of sulfur (byproducts of the burning of ... Several products have been developed for the purpose of polishing silver that serve to remove sulfur from the metal without ...
Truffle
Their chemical compounds infuse well with fats such as butter, cream, cheeses, avocados, and coconut cream. As the volatile ... Depending on the truffle species, lifecycle, or location, they include: Sulfur volatiles, which occur in all truffle species, ... Both the female pig's natural truffle-seeking and her intent to eat the truffle were thought to be due to a compound within the ... When the ascospores are fully developed, the truffle begin to exude volatile compounds that serve to attract animal vectors. ...
Brimstone in the Bottle: Sulfur Compounds in Wine - Palate Press
Descriptors of many aroma compounds: Flavornet. Great overview of sulfur in wine: Modulation of Sulfur Compounds by Wine Yeast ... Sulfur compound. Smells like…. Origin in wine. Sulfur dioxide (aka sulfites, SO2). struck match. Produced naturally by yeast, ... Sulfur roundup. Many prominent aromas in wine are derived from sulfur-containing compounds. Some of them are off-putting (e.g ... There are many more known sulfur-derived compounds in wine, so get out there and smell the sulfur! ...
Influence of dentin and enamel pretreatment with acidic sulfur compounds on adhesive performance - Zurich Open Repository and...
Influence of dentin and enamel pretreatment with acidic sulfur compounds on adhesive performance. 2013, University of Zurich, ... Influence of dentin and enamel pretreatment with acidic sulfur compounds on adhesive performance ... Download PDF Influence of dentin and enamel pretreatment with acidic sulfur compounds on adhesive performance. Item ...
US Patent for Sulfur compounds Patent (Patent # 5,637,702 issued June 10, 1997) - Justia Patents Search
Sulfur compounds of the formula ##STR1## where n is 0 or 2,R.sup.1 and R.sup.2 are hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.1 - ... And CarbonUS Patent for Sulfur compounds Patent (Patent # 5,637,702) Sulfur compounds ... Sulfur compounds of the formula ##STR1## where n is 0 or 2,R.sup.1 and R.sup.2 are hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.1 - ... 3. A sulfur compound as claimed in claim 1, wherein X is C.sub.1 -C.sub.8 -alkylene which may be interrupted by 1 to 3 oxygen ...
Sulfur - Wikipedia
Compounds[edit]. See also: Category:Sulfur compounds. Common oxidation states of sulfur range from −2 to +6. Sulfur forms ... The two principal sulfur oxides are obtained by burning sulfur: S + O2 → SO2 (sulfur dioxide). 2 SO2 + O2 → 2 SO3 (sulfur ... Sulfur oxidizers can use as energy sources reduced sulfur compounds, including hydrogen sulfide, elemental sulfur, sulfite, ... Transferring sulfur between inorganic and biomolecules[edit]. Main articles: Sulfur cycle, Sulfur assimilation, and Sulfur ...
Halogen, sulfur, nitrogen compounds
... Nitrogen-containing compounds Sulfur-nitrogen-containing compounds Sulfur-containing ... Nitrogen-containing compounds Sulfur-nitrogen-containing compounds Sulfur-containing compounds Halogen-containing compounds ... ChemicalBook , Product Catalog , Flavors and fragrances , Synthetic fragrances , Halogen, sulfur, nitrogen compounds ... compounds Halogen-containing compounds Click on the specific product, view the latest prices of the products, information, ...
Search Results
Subjects: Sulfur Compounds - Digital Collections - National Library of Medicine Search Results
Sulfur-Containing Amino Acids, Hydrogen Sulfide, and Sulfur Compounds on Kidney Health and Disease. | Metabolites;13(6)2023...
... and Sulfur Compounds on Kidney Health and Sulfur-Containing Amino Acids, Hydrogen Sulfide, and Sulfur Compounds on Kidney ... Sulfur-containing amino acids and sulfate are essential in normal pregnancy and fetal development. Dysregulated H2S signaling ... In animal models of renal programming, treatment with sulfur-containing amino acids, N-acetylcysteine, H2S donors, and ... organosulfur compounds during gestation and lactation could improve offsprings renal outcomes. In this review, we summarize ...
Acute Occupational Pesticide-Related Illness and Injury - United States, 2007-2010
For multiple reasons, the counts and rates provided in this report (Tables 1 and 2) are likely to be underestimates of the actual magnitude of acute occupational pesticide-related illness and injury (13). Many cases of persons with pesticide-related illness or injury are never ascertained because they neither seek medical care nor call appropriate authorities. Furthermore, because the signs and symptoms of acute pesticide-related illnesses are not pathognomonic, and because most health-care professionals are not acquainted with the recognition and management of these illnesses, many persons who seek medical care might not receive an accurate diagnosis. Even among those who do receive an accurate diagnosis, many are not reported to state surveillance systems, despite the fact that the participating states all have mandatory reporting requirements for occupational pesticide-related illness and injury (5). For these reasons, the counts and rates provided in this report must be considered minimum ...
NLM Classification, 5th Edition Additions and Changes List 3. NLM Technical Bulletin. Nov-Dec 1998
Blister Agents: Sulfur Mustard Agent H/HD, Sulfur Mustard Agent HT | Toxic Substances | Toxic Substance Portal | ATSDR
Sulfur mustards were introduced as chemical warfare agents during World War I. More than a dozen countries have sulfur mustard ... Destruction of U.S. stockpiles of chemical agents, including sulfur mustards, was mandated by the Chemical Weapons Convention ... Sulfur mustards H/HD and HT are manufactured compounds. They are colorless when pure, but are typically yellow to brown oily ... Summary: Sulfur mustards H/HD and HT are manufactured compounds. They are colorless when pure, but are typically yellow to ...
h2g2 - Carbon and its Inorganic Compounds - Edited Entry
Carbon and its Inorganic Compounds, from the edited h2g2, the Unconventional Guide to Life, the Universe and Everything ... Carbon-Sulphur Compounds. The simplest sulphur compound of carbon is carbon disulphide, CS2. It is a pale yellow toxic liquid ... In practice, this compound is non-stoichiometric and has a composition range from CF0.68 to CF0.995. It is a white compound. ... Carbon-Nitrogen Compounds. In addition to the vast array of nitrogen-containing organic compounds, carbon also forms a wide ...
sulfur based compound fertilizer Melaka, Malaysia, Batu Berendam, Krubong, Peringgit Supplier, Wholesaler, Supply, Supplies |...
Detection of volatile sulfur compounds (VSCs) in exhaled breath as a potential diagnostic method for oral squamous cell...
Principles of General, Organic, & Biological Chemistry
5.2.2. Magnesium Sulphate 'anhydrous' (33% MgO, 26% S): Highly concentrated magnesium and sulphur fertiliser used for ...
Highly concentrated magnesium and sulphur fertiliser used for manufacture of compound and liquid fertilisers or for straight ... 5.2.2. Magnesium Sulphate "anhydrous" (33% MgO, 26% S): Highly concentrated magnesium and sulphur fertiliser used for ... manufacture of compound and liquid fertilisers or for straight application in fertigation systems. (origin EU). Home , Products ...
IJMS | Free Full-Text | Molecular Physiology of Anaerobic Phototrophic Purple and Green Sulfur Bacteria
Primarily, the molecular metabolism of sulfur, which oxidizes hydrogen sulfide to elementary molecular sulfur, as well as ... also known as purple and green sulfur bacteria in the process of anoxygenic photosynthesis. Further, it analyzes certain ... sulfur and non-sulfur phototrophs). Molecular mechanisms of photosynthesis in the phototrophic microorganisms can differ and ... Steudel, R.; Eckert, B. Solid Sulfur Allotropes Sulfur Allotropes. In Elemental Sulfur and Sulfur-Rich Compounds I; Topics in ...
The EPA National Library Catalog | EPA National Library Network | US EPA
... and sulfur containing compounds-- v. 5. Pesticide chemicals. Vol. 4 includes a computer disk which contains the programs used ... Organic compounds--Environmental aspects--Handbooks, manuals, etc ; Environmental chemistry--Handbooks, manuals, etc ; Organic ... compounds--Properties--Handbooks, manuals, etc ; Quimica analitica ambiental Holdings. Library. Call Number. Additional Info. ...
Deep ocean metagenomes provide insight into the metabolic architecture of bathypelagic microbial communities | Communications...
Sorokin, D. Y. Oxidation of inorganic sulfur compounds by obligately organotrophic bacteria. Microbiology 72, 641-653 (2003). ... 6 (blue for nitrogen metabolism, red for sulfur metabolism; AOA ammonia-oxidizing archaea, SOB sulfur-oxidizing bacteria, NCDs ... nov., a novel lithoheterotrophic sulfur-oxidizing bacterium from the Black Sea. Syst. Appl. Microbiol. 28, 679-687 (2005). ... 7). The remaining five sequences were related to Form IV that may be involved in methionine salvage, sulfur metabolism, and d- ...
1549. Misbranding of Star Sulphur Compound. U. S. v. 13 1/2 Dozen Bottles and 21 5/6 Dozen Bottles of Star Sulphur Compound,...
Air PBR 106.371: Cooling-Water Units - Texas Commission on Environmental Quality - www.tceq.texas.gov
Ghent University Academic Bibliography
Biological treatment of gases polluted by volatile sulfur compounds Veerle Herrygers, Herman Van Langenhove (UGent) and Erik ... Your filters: cql: parent exact Environmental technologies to treat sulfur pollution. Principles and Engineering / ... ... 2000) Environmental technologies to treat sulfur pollution. Principles and Engineering / Lens, P. & Pol, L.H. (Eds.). - Essex ...
Guanylthiourea | Harvard Catalyst Profiles | Harvard Catalyst
Microbial Physiology - WUR
anoxic respiration with sulfur compounds for metal recovery. *chemolithotrophic processes on solid surfaces. ... Sulphur Cycle. Sulphur Cycle studies the ecology, physiology and the technological application of anaerobes involved in the ... "Strict anaerobes are key to the natural geochemical cycles of carbon, nitrogen and sulphur. Exploiting the processes catalysed ... microbial conversions of one-carbon compounds (CO2, CO, formate, methanol, CH4) to added-value products ...
NIOSHTIC-2 Search Results - Full View
Sulfur-compounds; Dyes; Medical-research; CAS No.. 10025-67-9; 7647-18-9; ... Preliminary evaluation of the NIOSH analytical method S270 for sulfur-monochloride (10025679) is discussed. No testing was ... A previously reported method involving a reaction between sulfur-monochloride and antimony-pentachloride (7647189) also was ...
These Are the Best Shampoos for an Itchy Scalp, According to Dermatologists
What It Is: An antifungal chemical compound (of selenium and sulfur) with exfoliating and oil-tempering abilities. It draws ... Sulfur does tend to be more drying to the skin, though, so those with dry or sensitive skin should consult with a professional ... piroctone olamine is an antifungal chemical compound that can also temper oil levels. ...
Advanced Search Results - Public Health Image Library(PHIL)
Water & Air Quality | Nutrient Management | UI Extension
These compounds can generally be classified as VOCs, odorous sulfur compounds and ammonia. PM can be emitted directly (i.e., ... While some odorous compounds can cause health problems, odors from livestock are mainly a community or individual perception ... Reducing Odorous Compound Emissions from Animal Facilities Using Wood-Chip Based Biofilters (pdf) ... Many different compounds can be the potential cause of odors from animal operations. ...
OxidationHydrogenToxicityVolatile compoundsAminoElemental sulfurCyclicBiologicalOdorOdorsPhosphorusMustardDisulfideOxygenEnzymesChemicalsOrganicEmissionsGarlicSulfidesPreliminaryBreathReactionBondsCarbonMoleculeFormsYellowVarietyElementsMainProcessChemical agentsRateFoundLifeContentPresenceHighlyPotentialParentApplicationGroupSystem
Oxidation2
- If sulfites are regarded as oxidized sulfur, then sulfides and mercaptans are at the other end of the oxidation spectrum: reduced sulfur. (palatepress.com)
- Oxidation of sulfur compounds. (cdc.gov)
Hydrogen5
- When sulfur-containing amino acids like cysteine and methionine get degraded, they release sulfur groups that are processed into various sulfur-containing compounds, hydrogen sulfide among them. (palatepress.com)
- Carbon is second only to hydrogen in the number of compounds that it forms. (h2g2.com)
- These compounds also contain hydrogen but are not the main focus of this Entry. (h2g2.com)
- This paper describes bacteria capable of molecular oxidizing hydrogen sulfide, specifically the families Chromatiaceae and Chlorobiaceae , also known as purple and green sulfur bacteria in the process of anoxygenic photosynthesis. (mdpi.com)
- A class of compounds formed when the hydrogen of an acid is partly or wholly replaced by a metal or a metallic radical. (castlemalting.com)
Toxicity1
- The effects of sulfur, thiol, and thiol inhibitor compounds on arsine-induced toxicity in the human erythrocyte membrane. (medscape.com)
Volatile compounds1
- 1985. Automatic system for rapid analysis of volatile compounds by purge-and-cold trapping/capillary gas chromatography. (cdc.gov)
Amino1
- Garlic abounds with naturally occurring sulfur compounds, amino acids and trace minerals. (netrition.com)
Elemental sulfur5
- When elemental sulfur is exposed to air, it forms sulfur dioxide, which burns the inside of the nose and stinks up the whole chemistry wing of the building. (palatepress.com)
- Elemental sulfur is sprayed in vineyards to control growth of microorganisms on grapes. (palatepress.com)
- This malodorous molecule can come from two sources during fermentation: (1) excessive elemental sulfur sprayed on grapes and (2) nutrient deficiency in yeast. (palatepress.com)
- Elemental sulfur is a bright yellow, crystalline solid at room temperature . (wikipedia.org)
- [6] Today, almost all elemental sulfur is produced as a byproduct of removing sulfur-containing contaminants from natural gas and petroleum . (wikipedia.org)
Cyclic2
- Under normal conditions , sulfur atoms form cyclic octatomic molecules with a chemical formula S 8 . (wikipedia.org)
- The combined effects of catenation and multiple bond formation also allows the formation of planar cyclic aromatic 2 compounds such as benzene. (h2g2.com)
Biological2
Odor3
- The FMO3 enzyme normally converts fishy-smelling trimethylamine into another compound, trimethylamine-N-oxide, which has no odor. (medlineplus.gov)
- The excretion of this compound is responsible for the strong body odor characteristic of trimethylaminuria. (medlineplus.gov)
- Subjects in the exposed nostics) and included the following main surizing and cooling [3], and for safety and unexposed groups were matched by parameters and indices: white blood cell purposes contains a sulfur-based odor- sex, age and governorate. (who.int)
Odors3
- While some odorous compounds can cause health problems, odors from livestock are mainly a community or individual perception issue. (uidaho.edu)
- Many different compounds can be the potential cause of odors from animal operations. (uidaho.edu)
- Copper is traditionally used for distillery needs and is often necessary because during the process, the alloy reacts with sulfur compounds to remove sulfuric odors and taste. (modernmetals.com)
Phosphorus1
- These enzymes break down compounds that contain nitrogen, sulfur, or phosphorus. (medlineplus.gov)
Mustard1
- Sulfur mustards were introduced as chemical warfare agents during World War I. More than a dozen countries have sulfur mustard agents in their chemical arsenals. (cdc.gov)
Disulfide3
- In this work, the cytotoxicity of crude onion extract (OE) and fractioned extract (aqueous, methanolic and ethyl acetate), as well as some onion compounds (quercetin and propyl disulfide) were evaluated in Lucena MDR human erythroleukemic and its K562 parental cell line. (scielo.cl)
- 2008). Among the organosulphur compounds identified in onion oil and powder is dipropyl disulfide, one of the major isolated chemicals (Seki et al. (scielo.cl)
- Molybdenum disulfide(MoS2) (MoS2) molybdenum selenide (MoS2) molybdenum tritelluride [MoTe2] are all heterogeneous, isophase compounds. (mis-asia.com)
Oxygen1
- Oxygen, nitrogen, and sulfur containing compounds-- v. 5. (epa.gov)
Enzymes1
- The first case seems easy enough to understand (sulfur is reduced by yeast enzymes), but the origins of H 2 S due to yeast nutrient deficiency are slightly more subtle. (palatepress.com)
Chemicals1
- The word "sulfur," in my mind, is inexorably linked back to Mr. Burcik's high school chemistry class, when we were given soft, pungent, yellow chunks to mix with other chemicals. (palatepress.com)
Organic3
- Thus it has been estimated that there are of the order of 22 million organic (carbon-based) compounds 1 . (h2g2.com)
- 1957.Decomposability of some organic sulfur compounds in soil. (europa.eu)
- Mechanical reduction of halitosis can also be achieved by reducing the intraoral bacterial count by disrupting the tongue biofilm, thus decreasing the production of volatile sulfur compounds or volatile organic compounds. (medscape.com)
Emissions1
- 1979. Preliminary measurements of biogenic sulfur-containing gas emissions from soils. (cdc.gov)
Garlic1
- Many sulfur compounds are odoriferous, and the smells of odorized natural gas, skunk scent, grapefruit, and garlic are due to organosulfur compounds. (wikipedia.org)
Sulfides1
- Sulfur is an essential element for all life, but almost always in the form of organosulfur compounds or metal sulfides. (wikipedia.org)
Preliminary1
- Preliminary evaluation of the NIOSH analytical method S270 for sulfur-monochloride (10025679) is discussed. (cdc.gov)
Breath1
- Detection of volatile sulfur compounds (VSCs) in exhaled breath as a potential diagnostic method for oral squamous cell carcinoma. (bvsalud.org)
Reaction2
- A previously reported method involving a reaction between sulfur-monochloride and antimony -pentachloride (7647189) also was evaluated but was unsatisfactory because water must be excluded. (cdc.gov)
- PM can be emitted directly (i.e., dust) or formed in the atmosphere by the chemical reaction of pollutants such as sulfur oxides, nitrogen oxides, VOCs and ammonia. (uidaho.edu)
Bonds2
- Along with the other first row non-metals, carbon can form C=C double bonds and C≡C triple bonds through sideways overlap of atomic p orbitals and these can be incorporated into the carbon-carbon bonded frameworks of its compounds, giving rigidity since these bonds can't rotate. (h2g2.com)
- Other elements such as sulphur and silicon can also catenate, but far less effectively due to much weaker bonds (Si-Si 226 kJ mol -1 ). (h2g2.com)
Carbon2
- The magnetic properties of its nucleus enable it to act as an effective natural marker for the characterisation of carbon-containing compounds in 13 C nuclear magnetic resonance (NMR) spectroscopy. (h2g2.com)
- A class of broad-spectrum β-lactam antibiotics, structurally similar to penicillins, with the substitution of a carbon atom ( carba -) for a sulfur atom ( Figure ). (cdc.gov)
Molecule1
- One of these compounds is trimethylamine, which is the molecule that gives fish their fishy smell. (medlineplus.gov)
Forms2
- The term "sulfites" refers to the various forms of sulfur dioxide present in wine. (palatepress.com)
- Molybdenum forms a number of compounds homogeneous with sulfur, tellurium, and selenium. (mis-asia.com)
Yellow1
- Yellow gas is indicative of sulfur and is dangerous to breathe. (cdc.gov)
Variety2
- These undesirable notes occur due to the volatile formation of a variety of sulphur containing compounds, methyl ketones and aliphatic aldehydes , derived from the constituents of the milk 's matrix during thermal processing and storage. (bvsalud.org)
- The "cooked" flavor of UHT milk is associated with the presence of a variety of sulphur containing compounds while the "stale" flavor is characterized by the dissipation of these sulphur volatiles and an increase of the formation and presence of both methyl ketones and aliphatic aldehydes over time . (bvsalud.org)
Elements2
- Sulfur is one of the core chemical elements needed for biochemical functioning and is an elemental macronutrient for all living organisms. (wikipedia.org)
- Combining the elements at high temperature in sealed vacuum tubes is how you create these compounds. (mis-asia.com)
Main1
- There are two main types of bacterial photosynthesis: oxygenic (cyanobacteria) and anoxygenic (sulfur and non-sulfur phototrophs). (mdpi.com)
Process1
- Sulfur-based aroma compounds are found at all stages of the winemaking process, and can range from downright noxious to fruity and pleasant. (palatepress.com)
Chemical agents1
- Destruction of U.S. stockpiles of chemical agents, including sulfur mustards, was mandated by the Chemical Weapons Convention to take place before April 2007. (cdc.gov)
Rate1
- Competing with the sulfur compound with the nitrous compound speeds up the recovery of the oxygenation rate because though it out-competes the sulfur it's volatility makes it one to leave the system quickly in the lungs. (cdc.gov)
Found2
- Let's take a look at some of the various sulfur-containing aroma compounds found in wine. (palatepress.com)
- Though sometimes found in pure, native form, sulfur on Earth usually occurs as sulfide and sulfate minerals . (wikipedia.org)
Life1
- cystine , taurine , etc.) and two vitamins ( biotin and thiamine ) are organosulfur compounds crucial for life. (wikipedia.org)
Content1
- https://pubs.rsc.org/en/content/articlelanding/2022/AY/D2AY00713D. (usda.gov)
Presence1
- Sulfur isn't just about the pungent sting of a burnt match, though, and in wine it's not just about the presence of sulfites. (palatepress.com)
Highly2
- The C 4+ is not observed but C 4- may exist in compounds which are called carbides formed with highly electropositive metals. (h2g2.com)
- Magnesium Sulphate 'anhydrous' (33% MgO, 26% S): Highly concentrated magnesium and sulphur fertiliser used for manufacture of compound and liquid fertilisers or for straight application in fertigation systems. (sico.be)
Potential1
- As well, sodiumon-propyl thiosulfate (NPTS), an alk(en)yl thiosulfate present in Allium cepa, suppressed the growth of HL-60 cells through the induction of apoptosis initiated by oxidative stress, indicating that the alk(en)yl thiosulfates account partly for the anti-carcinogenic properties of onion and have the potential to prevent tumors (Chang et al. (scielo.cl)
Parent1
- cql: parent exact 'Environmental technologies to treat sulfur pollution. (ugent.be)
Application1
- The original application of sulfites was burning sulfur candles in amphorae (the clay vessels used to make wine in ancient times). (palatepress.com)
Group1
- The total sulfur concentration was also higher in the OSCC group, but there was no significant difference in the ratio of Ch3SH to H2S between the two groups. (bvsalud.org)
System1
- The asparagus itself, though quite tasty, later confronts you with an unpleasant smell of sulfur-that unique and cruel trick this herbaceous vegetable likes to play on our urinary system. (smithsonianmag.com)
