Thiourea: A photographic fixative used also in the manufacture of resins. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), this substance may reasonably be anticipated to be a carcinogen (Merck Index, 9th ed). Many of its derivatives are ANTITHYROID AGENTS and/or FREE RADICAL SCAVENGERS.Urea: A compound formed in the liver from ammonia produced by the deamination of amino acids. It is the principal end product of protein catabolism and constitutes about one half of the total urinary solids.PhenylthioureaEthylenethiourea: A degradation product of ethylenebis(dithiocarbamate) fungicides. It has been found to be carcinogenic and to cause THYROID hyperplasia.Spermatocidal Agents: Chemical substances that are destructive to spermatozoa used as topically administered vaginal contraceptives.Thioamides: Organic compounds containing the radical -CSNH2.Blood Urea Nitrogen: The urea concentration of the blood stated in terms of nitrogen content. Serum (plasma) urea nitrogen is approximately 12% higher than blood urea nitrogen concentration because of the greater protein content of red blood cells. Increases in blood or serum urea nitrogen are referred to as azotemia and may have prerenal, renal, or postrenal causes. (From Saunders Dictionary & Encyclopedia of Laboratory Medicine and Technology, 1984)Potassium Iodide: An inorganic compound that is used as a source of iodine in thyrotoxic crisis and in the preparation of thyrotoxic patients for thyroidectomy. (From Dorland, 27th ed)2,2'-Dipyridyl: A reagent used for the determination of iron.Isothiuronium: An undecenyl THIOUREA which may have topical anti-inflammatory activity.Tachyphylaxis: Rapidly decreasing response to a drug or physiologically active agent after administration of a few doses. In immunology, it is the rapid immunization against the effect of toxic doses of an extract or serum by previous injection of small doses. (Dorland, 28th ed)Hydroxides: Inorganic compounds that contain the OH- group.Cinchona Alkaloids: Alkaloids extracted from various species of Cinchona.PhloretinAllantoin: A urea hydantoin that is found in URINE and PLANTS and is used in dermatological preparations.Hydroxyl Radical: The univalent radical OH. Hydroxyl radical is a potent oxidizing agent.Benzoic Acid: A fungistatic compound that is widely used as a food preservative. It is conjugated to GLYCINE in the liver and excreted as hippuric acid.Molecular Structure: The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.Rodenticides: Substances used to destroy or inhibit the action of rats, mice, or other rodents.Cyclization: Changing an open-chain hydrocarbon to a closed ring. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)o-Chlorobenzylidenemalonitrile: A riot control agent which causes temporary irritation of the eyes and the mucosal surface of the respiratory tract. It is a more potent irritant than OMEGA-CHLOROACETOPHENONE, but less incapacitating.Pyrimidines: A family of 6-membered heterocyclic compounds occurring in nature in a wide variety of forms. They include several nucleic acid constituents (CYTOSINE; THYMINE; and URACIL) and form the basic structure of the barbiturates.Cycloaddition Reaction: Synthetic organic reactions that use reactions between unsaturated molecules to form cyclical products.Porosity: Condition of having pores or open spaces. This often refers to bones, bone implants, or bone cements, but can refer to the porous state of any solid substance.Tear Gases: Gases that irritate the eyes, throat, or skin. Severe lacrimation develops upon irritation of the eyes.Aldehydes: Organic compounds containing a carbonyl group in the form -CHO.Hydrocarbons, Acyclic: Organic compounds composed exclusively of carbon and hydrogen where no carbon atoms join to form a ring structure.Metals, Alkali: Metals that constitute group 1(formerly group Ia) of the periodic table. They are the most strongly electropositive of the metals. Note that HYDROGEN is not considered an alkali metal even though it falls under the group 1 heading in the periodic table.Literature, ModernNature: The system of all phenomena in space and time; the totality of physical reality. It is both a scientific and philosophic concept appearing in all historic eras. (Webster 2d; Dr. James H. Cassedy, NLM History of Medicine Division)Photosynthesis: The synthesis by organisms of organic chemical compounds, especially carbohydrates, from carbon dioxide using energy obtained from light rather than from the oxidation of chemical compounds. Photosynthesis comprises two separate processes: the light reactions and the dark reactions. In higher plants; GREEN ALGAE; and CYANOBACTERIA; NADPH and ATP formed by the light reactions drive the dark reactions which result in the fixation of carbon dioxide. (from Oxford Dictionary of Biochemistry and Molecular Biology, 2001)Macrocyclic Compounds: Cyclic compounds with a ring size of approximately 1-4 dozen atoms.Porphyrins: A group of compounds containing the porphin structure, four pyrrole rings connected by methine bridges in a cyclic configuration to which a variety of side chains are attached. The nature of the side chain is indicated by a prefix, as uroporphyrin, hematoporphyrin, etc. The porphyrins, in combination with iron, form the heme component in biologically significant compounds such as hemoglobin and myoglobin.Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Madurella: A mitosporic fungal genus that causes MYCETOMA in humans. Madurella grisea and M. mycetomatis are the etiological agents.Pyrones: Keto-pyrans.Datura: A plant genus of the family SOLANACEAE. Members contain TROPANES. The common name of trumpet flower is also sometimes used for GELSEMIUM.Estrenes: Unsaturated derivatives of the ESTRANES with methyl groups at carbon-13, with no carbon at carbon-10, and with no more than one carbon at carbon-17. They must contain one or more double bonds.ValeratesTetrazolium Salts: Quaternary salts derived from tetrazoles. They are used in tests to distinguish between reducing sugars and simple aldehydes, for detection of dehydrogenase in tissues, cells, and bacteria, for determination of corticosteroids, and in color photography. (From Mall's Dictionary of Chemistry, 5th ed, p455)Genomic Structural Variation: Contiguous large-scale (1000-400,000 basepairs) differences in the genomic DNA between individuals, due to SEQUENCE DELETION; SEQUENCE INSERTION; or SEQUENCE INVERSION.Diamond: Diamond. A crystalline form of carbon that occurs as hard, colorless or tinted isomeric crystals. It is used as a precious stone, for cutting glass, and as bearings for delicate mechanisms. (From Grant & Hackh's Chemical Dictionary, 5th ed)National Institute of Dental and Craniofacial Research (U.S.): Component of the NATIONAL INSTITUTES OF HEALTH. It seeks to improve oral, dental and craniofacial health through research, research training, and the dissemination of health information by conducting and supporting basic and clinical research. It was established in 1948 as the National Institute of Dental Research and re-named in 1998 as the National Institute of Dental and Craniofacial Research.Gene Library: A large collection of DNA fragments cloned (CLONING, MOLECULAR) from a given organism, tissue, organ, or cell type. It may contain complete genomic sequences (GENOMIC LIBRARY) or complementary DNA sequences, the latter being formed from messenger RNA and lacking intron sequences.Small Molecule Libraries: Large collections of small molecules (molecular weight about 600 or less), of similar or diverse nature which are used for high-throughput screening analysis of the gene function, protein interaction, cellular processing, biochemical pathways, or other chemical interactions.Kinetics: The rate dynamics in chemical or physical systems.Amines: A group of compounds derived from ammonia by substituting organic radicals for the hydrogens. (From Grant & Hackh's Chemical Dictionary, 5th ed)Carbamazepine: An anticonvulsant used to control grand mal and psychomotor or focal seizures. Its mode of action is not fully understood, but some of its actions resemble those of PHENYTOIN; although there is little chemical resemblance between the two compounds, their three-dimensional structure is similar.Crystallography, X-Ray: The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Models, Molecular: Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.Prince Edward Island: An island in the Gulf of St. Lawrence constituting a province of Canada in the eastern part of the country. It is very irregular in shape with many deep inlets. Its capital is Charlottetown. Discovered by the French in 1534 and originally named Ile Saint-Jean, it was renamed in 1799 in honor of Prince Edward, fourth son of George III and future father of Queen Victoria. (From Webster's New Geographical Dictionary, 1988, p981 & Room, Brewer's Dictionary of Names, 1992, p433)Crystallization: The formation of crystalline substances from solutions or melts. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Protein Conformation: The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain).Tissue Engineering: Generating tissue in vitro for clinical applications, such as replacing wounded tissues or impaired organs. The use of TISSUE SCAFFOLDING enables the generation of complex multi-layered tissues and tissue structures.
For instance, ureas are less acidic than thioureas by roughly 6 pKa units, but it is not generally true that ureas are ... Urea and thiourea catalysts are the most common donors in anion-binding catalysis, and their ability to bind halides and other ... Bifunctional urea and thiourea catalysis are abundant in the literature. Guanidinium and amidinium ions are structural ... These are termed "privileged structures". Ureas and thioureas are by far the most common structures and can stabilize a variety ...
Timiperone has the same structure but thiourea instead of normal urea. Pimozide & Oxiperomide & Neflumozide are also made from ...
Other hydrogen-bonded networks are derived from hydroquinone, urea, and thiourea. A much studied host molecule is Dianin's ...
These catalytically effective (thio)urea derivatives termed (thio)urea organocatalysts provide explicit double hydrogen-bonding ... A large group of organocatalysts incorporate the urea or the thiourea moiety. ... Hydrogen bonding catalysts, including TADDOLS, derivatives of BINOL such as NOBIN, and organocatalysts based on thioureas ...
... s are formed by dehydration of ureas or from thioureas. They are also formed by treating organic isocyanates with ... The O-acylisourea will react with amines to give the desired amide 3 and urea 4. The side reaction of the O-acylisourea 2 ... Carbodiimides hydrolyze to form ureas, which makes them uncommon in nature. From the perspective of small molecule activation, ...
Patil PM, Ansari MF, Prasad KM (2010). Effect of urea and thio-urea on the performance of water soluble lac varnishes. Indian ...
1,2-Diketones condense with many bifunctional nucleophiles, such as urea and thiourea to give heterocycles. Upon condensation ...
The fluorinated carbon nanotubes, through substitution, can be further functionalized with urea, guanidine, thiourea and ...
A similar effect is observed in oxo- and thiourea analogs. In going from urea to thiourea to selenourea the double bond is more ... Se π bond in thiourea and selenourea will also be similar. Unlike urea and thiourea, which have both been researched ... which is lies more to the right that than urea's). Thiourea has been shown to exist predominantly in its thione form at 42 °C ... in contrast to a much greater delocalization in going from urea to thiourea). These minor differences suggest that the ...
It is similar in chemical structure to benperidol but has a thiourea group instead of a urea group. Index Nominum 2000: ...
... thiourea, and urea.[citation needed] Boom method Chaotropic activity Denaturation (biochemistry) DNA separation by silica ...
Water, hydrogen sulfide, and hydrogen selenide react with cyanamide to give urea, thiourea, and selenourea, respectively: H2NCN ... The ester absorbs traces of moisture (suppression of urea formation), neutralizes alkalinity (ammonia) and continually releases ... Cyanamide degrades via hydrolysis to urea, an excellent fertilizer. Fungi, like Myrothecium verrucaria, accelerate this process ...
A single example of the deoxygenation of a urea with a fluorene derived carbene to give the tetramethyldiaminocarbene and ... Another approach of preparing carbenes has relied on the desulfurisation of thioureas with potassium in THF. A contributing ... fluorenone has also been reported: The desulfurisation of thioureas with molten potassium to give imidazol-2-ylidenes or ...
... although simple organic urea- and thiourea based receptors are known. With the ion(s) they act upon: Beauvericin (Ca2+, Ba2+) ...
... thiourea, and urea in ether-anesthetized newborn vs. adult rabbits shows that newborn rabbit and adult rabbit brain endothelia ...
Therefore, replacement of the thiocarbonyl in the thiourea group was suggested: with urea or guanidine resulted in a compound ... "Cyanoguanidine-thiourea equivalence in the development of the histamine H2-receptor antagonist, cimetidine". Journal of ... It was determined that the thiourea group was the cause of the agranulocytosis. ... groups are sufficiently electronegative to reduce the pKa of the neighboring nitrogens to the same acidity of the thiourea ...
... but the properties of urea and thiourea differ significantly. Thiourea is a reagent in organic synthesis. "Thioureas" refers to ... Thiourea (/ˌθaɪəjʊˈriːə, ˌθaɪoʊ-/) is an organosulfur compound with the formula SC(NH2)2 . It is structurally similar to urea, ... Thiourea is a planar molecule. The C=S bond distance is 6990160000000000000♠1.60±0.1 Å for thiourea (as well as many of its ... Many derivatives of thiourea are useful in organocatalysis. N,N′-unsubstituted thioureas can be generally prepared by treating ...
Process for the production of condensation products from formaldehyde and urea or thiourea or other urea derivatives), Austrian ... Urea formaldehyde (Plastics Historical Society) History of urea-formaldehyde: Chapter 1 of: Carl Meyer, Urea-Formaldehyde ... Urea-formaldehyde, also known as urea-methanal, so named for its common synthesis pathway and overall structure, is a non- ... Urea formaldehyde is also used in agriculture as a controlled release source of nitrogen fertilizer. Urea formaldehyde's rate ...
An aqueous solution of thiourea dioxide has a pH about 6.5 at which thiourea dioxide is hydrolyzed to urea and sulfoxylic acid ... The structure of thiourea dioxide is related to that for thiourea. The N2CS core is approximately planar, but the sulfur is ... Thiourea dioxide is used in reductive bleaching in textiles. Thiourea dioxide has also been used for the reduction of aromatic ... Thiourea dioxide was first prepared in 1910 by the English chemist Edward de Barry Barnett (1886-1961). Thiourea dioxide is ...
... s can be inhibited by the action of urea analogues like thiourea and glycosides like phloretin. Their ... A urea transporter is a membrane transport protein, transporting urea. Humans and other mammals have two types of urea ... Urea transporter 3 transports urea into the interstitium of the Inner Medullary Collecting Duct. Urea transporter 4 has been ... It reabsorbs up to 70% of the original filtered load of urea. Urea Transporter 2 transports urea across the apical membrane ...
Thio)urea organocatalysis describes the utilization of properly designed derivatives of urea and thiourea to accelerate and ... "Recognition and activation by ureas and thioureas: stereoselective reactions using ureas and thioureas as hydrogen-bonding ... Kotke, Mike (Ph.D. 2009). Hydrogen-Bonding (Thio)urea Organocatalysts in Organic Synthesis : State of the art and Practical ... Check date values in: ,date= (help) Kotke, Mike; Schreiner, Peter R. (October 2009). "(Thio)urea Organocatalysts". In Petri M. ...
In addition to urea also thiourea is used in the process. In addition to the n-alkanes are also unbranched fatty acids with ... Kenneth D. M. Harris: Fundamental and Applied Aspects of Urea and Thiourea Inclusion Compounds. In: Supramolecular Chemistry. ... The obtained n-paraffins have a purity of about 99%. Losses of urea are small, the hot urea solution can be returned directly ... The necessary quantity of urea for the formation of inclusion compounds varies from about 1 to 0.8 mole of urea per methyl- and ...
Reaction of the former with amidines to give 2-substituted pyrimidines, with urea to give 2-pyrimidinones, and guanidines to ... other methods rely on condensation of carbonyls with diamines for instance the synthesis of 2-thio-6-methyluracil from thiourea ... Grimaux, E. (1879). "Synthèse des dérivés uriques de la série de l'alloxane" [Synthesis of urea derivatives of the alloxan ... when Grimaux reported the preparation of barbituric acid from urea and malonic acid in the presence of phosphorus oxychloride. ...
Such reactions can be catalyzed by the presence of urea. ROH + H2NSO3H → ROS(O) 2O− + NH+ 4 Sulfamic acid is mainly a precursor ... According to the label on the consumer product, the liquid silver cleaning product TarnX contains thiourea, a detergent, and ... Sulfamic acid is produced industrially by treating urea with a mixture of sulfur trioxide and sulfuric acid (or oleum). The ... Its behavior resembles that of urea, (H2N)2CO. Both feature amino groups linked to electron-withdrawing centers that can ...
... innexin family 1.A.26 Mg2+ transporter-E family 1.A.27 Phospholemman family 1.A.28 Urea transporter family 1.A.29 Urea/amide ... Family 1.D.27 The Thiourea isosteres Family 1.D.28 The Lipopeptaibol Family 1.D.29 The Macrocyclic Oligocholate Family 1.D.30 ... family 1.B.16 Short chain amide and urea porin (SAP) family 1.B.17 Outer membrane factor (OMF) family 1.B.18 Outer membrane ... Family 2.B.27 The Tris-Urea Anion Transporter Family 2.B.29 The Anionophoric Marine Alkaloid Tambjamine Family 2.C.1 The TonB- ...
Urea terkait. Thiourea. Hydroxycarbamide Senyawa terkait. Carbamide peroxide. Urea phosphate Aseton Asam karbonat Carbonyl ... Pupuk ureaSunting. Sekitar 90% urea industri digunakan sebagai pupuk kimia. Urea dalam bentuk butiran curah (prill) digunakan ... Di tanah, urea akan terhidrolisis dan melepaskan ion amonium. Kandungan N pada urea adalah 46%, tetapi yang tergunakan oleh ... Untuk kegunaan lain, baca artikel Urea (disambiguasi).. Urea adalah senyawa organik yang tersusun dari unsur karbon, hidrogen, ...
For general background on the chemistry of thio-urea derivatives, see: Choi et al. (2008. ); Jones et al. (2008. ); Kushwaha et ... In the crystal packing, thio-urea mol-ecules are linked by inter-molecular C-H⋯O hydrogen-bond inter-actions to form chains ... 1-(4-Nitro-benzo-yl)-3-(4-nitro-phen-yl)-thio-urea acetone hemisolvate. ... with respect to the thio-urea S atom. The mol-ecular conformation is stabilized by intra-molecular N-H⋯O and C-H⋯S hydrogen ...
Highly efficient synthesis of monomeric and dimeric thiourea macrocycles with a per-O-benzylated sucrose scaffold is reported. ... "Choose-a-size" control in the synthesis of sucrose based urea and thiourea macrocycles K. Łęczycka-Wilk, F. Ulatowski, P. Cmoch ... "Choose-a-size" control in the synthesis of sucrose based urea and thiourea macrocycles ... Highly efficient synthesis of monomeric and dimeric thiourea macrocycles with a per-O-benzylated sucrose scaffold is reported. ...
Abstract:In the present study, a series of novel quinazolinones functionalized with urea/thiourea/thiazole derivatives was ... In the present study, a series of novel quinazolinones functionalized with urea/thiourea/thiazole derivatives was synthesized ... Title:Synthesis and Antioxidant Activity of Novel Quinazolinones Functionalized with Urea/Thiourea/Thiazole Derivatives as 5- ... Synthesis and Antioxidant Activity of Novel Quinazolinones Functionalized with Urea/Thiourea/Thiazole Derivatives as 5- ...
Abstract:The three-component reaction of malononitrile, aldehydes and thiourea/urea, is applied to the formation of pyrimidine ... Title:Synthesis of Pyrimidine Derivatives from Three-component Reaction of Malononitrile, Aldehydes and Thiourea/Urea in the ... The three-component reaction of malononitrile, aldehydes and thiourea/urea, is applied to the formation of pyrimidine ... Synthesis of Pyrimidine Derivatives from Three-component Reaction of Malononitrile, Aldehydes and Thiourea/Urea in the Presence ...
Molecularly Imprinted Polymers for the Recovery and Recycling of Thio(urea) organocatalysts. Manesiotis, P. (Presenter) ...
A series of novel selenourea derivatives and corresponding thiourea analogs were synthesized and tested against a panel of six ... Novel seleno- and thio-urea derivatives with potent in vitro activities against several cancer cell lines. ... Novel seleno- and thio-urea derivatives with potent in vitro activities against several cancer cell lines. ... Novel seleno- and thio-urea derivatives with potent in vitro activities against several cancer cell lines. ...
Anion recognition by oligo-(thio)urea-based receptors journal, January 2016 * Jia, Chuandong; Zuo, Wei; Zhang, Dan ... Selective recognition of choline phosphate by tripodal hexa-urea receptors with dual binding sites: crystal and solution ... ion and six urea units; d The aromatic box (site-I) trapping a TMA+ through cation-π interactions (purple-dashed lines) and a ... urea]) diphosphate acetonitrile unknown solvate dihydrate Space Group: P 21/c (14), Cell: a 18.716(2)Å b 25.844(3)Å c 35.201(4) ...
Ultrasonic Studies in Aqueous Solutions of Urea and Thiourea. Rao, N. Prabhakara / Reddy, K. C. ...
Other names: Urea, thio-; «beta»-Thiopseudourea; Pseudothiourea; Pseudourea, 2-thio-; Thiocarbamide; THU; 2-Thiourea; (NH2)2CS ... Sulourea; Urea, 2-thio-; USAF EK-497; Isothiourea; Rcra waste number U219; Thiocarbonic acid diamide; Thiomocovina; 2- ...
Keywords: Urea Board Subjects: Soil ,Fertilizers ,Nitrogen Citation: R. M. El Shahawy , Effect of N-serve, thiourea and ... Effect of N-serve, thiourea and potassium azide on nitrification of urea in soil El Shahawy R. M.; Egypt. J. Microbiol. 1986; ... Thiourea, patented as ureas inhibitor, at 10, 50 and 100 mug g-1, seemed to effect urease than nitrification which led to ... Effect of N-serve, thiourea and potassium azide on nitrification of urea in soil ...
Thiourea, N,N-(1,2-ethanediyl)-. *USAF EL-62. *Urea, 1,3-ethylene-2-thio- ... Ethylene thiourea (ETU). CASRN 96-45-7. *IRIS Summary (PDF) (10 pp, 105 K) ...
7.3 Urea and Thiourea Clathrates.. 7.4 Other Channel Clathrates.. 7.5 Hydroquinone, Phenol, Dianins Compound and the Hexahost ...
Other names: Urea, 1-phenyl-2-thio-; «alpha»-Phenylthiourea; N-Phenylthiourea; Phenylthiocarbamide; Phenylthiourea; PTU; U 6324 ... 1-Phenyl-2-Thiourea; 1-Phenylthiourea; NCI-C02017; USAF EK-1569; Fenylthiomocovina; Rcra waste number P093; NSC 5779; Phenyl-2- ... thiourea; Thiourea, N-phenyl- * Permanent link for this species. Use this link for bookmarking this species for future ...
Thio)urea organocatalysis describes the utilization of properly designed derivatives of urea and thiourea to accelerate and ... "Recognition and activation by ureas and thioureas: stereoselective reactions using ureas and thioureas as hydrogen-bonding ... Kotke, Mike (Ph.D. 2009). Hydrogen-Bonding (Thio)urea Organocatalysts in Organic Synthesis : State of the art and Practical ... Check date values in: ,date= (help) Kotke, Mike; Schreiner, Peter R. (October 2009). "(Thio)urea Organocatalysts". In Petri M. ...
Rafael Garcia wrote: , I am solubilizing difficult proteins using a pretty harsh extraction solution: , 7M Urea , 2M Thiourea , ... Urea and thiourea can cause problems in SDS-PAGE, especially at high concentrations. Also the presence of high concentrations ... since you are working with urea, 30 min at 37 degrees. *Previous message: [Protein-analysis] Membrane protein purification!! ...
Piperidino ureas and thioureas. US4282155. 5 Aug 1980. 4 Aug 1981. Merck & Co., Inc.. Antihypercholesterolemic compounds. ...
7 m urea; 2 m thiourea; 4% 3-[(3-cholamidopropyl)dimethylammonio]propanesulfonate; 20 mm dithiothreitol and 0.5% IPG buffer (GE ... Subsequently, IPG strips were incubated in equilibration buffer (6 m urea; 30% (w/v) glycerol; 2% SDS; 50 mm Tris/HCl, pH 8.0) ... 8 m urea; 2 × complete protease inhibitor mixture (Roche)) frozen in liquid nitrogen and ground in a pebble mill (Retsch; ...
In our group we have developed thiourea-based catalysts that are effective in catalyzing a variety of transformations such as ... ureas and weak silicon Lewis acids (e.g., SiCl4). Such silicon-(thio)urea catalyst effectively catalyze the stereospecific ... Thio)urea organocatalysis-What can be learnt from anion recognition?. Zhiguo Zhang and Peter R. Schreiner Chem. Soc. Rev. 2009 ... Urea- and thiourea-catalyzed aminolysis of carbonates. M. Blain, Honman Yau, L. Jean-Gérard, R. Auvergne, D. Benazet, Peter R. ...
8 Urea/Thiourea-Anion Host Lattices, Stabilization of Labile Species, and Designed Construction of Rosette Ribbon and Layers ( ... 8.2 Inclusion Compounds with Urea/Thiourea-Anion Host Lattices.. 8.3 Stabilization of Cyclic Oxocarbon Dianions by Hydrogen ...
... urea derivatives (e.g., hydroxyurea, thiourea), c) a non-steroidal anti-inflamatory agents, d) antmetabolites, e) urea, urea ... D. Urea-NSAID and Hydroxy Urea-NSAID Solutions. The following are examples of formulations for Urea-NSAID and Hydroxy Urea- ... e) a urea, urea derivative, non-enzymatic protein urea, urea derivatives, non-enzymatic proteins, nucleosides, nucleotides and ... urea derivatives (e.g., hydroxyurea, thiourea), c) a non-steroidal anti-inflamatory agents, d) antmetabolites, e) urea, urea ...
Then, 280 μL of rehydration buffer (urea, 7 M; thiourea, 2 M; CHAPS, 4%; DTT, 65 mM) containing 0.2% of Bio-Lyte 3/10 ampholyte ... Proteins were extracted by resuspending the pellet of CBSS-washed pathogens in 70 μL of denaturing UTTC buffer (urea, 7 M; ... thiourea, 2 M; Tris, 30 mM; CHAPS, 4%; pH 8.5) (Figure 1, 8). After 2 h incubation at room temperature on a rocking agitator, ... urea, 6 M; SDS, 2%; glycerol, 30%; bromophenol blue; pH 8.8) containing DTT (130 mM) at 55°C and they were alkylated by an ...
Process for producing reduced keratinous substances using urea or thiourea. US4570629 *. Sep 21, 1983. Feb 18, 1986. University ...
... urea compounds such as urea, thiourea, and tetramethylurea; allophanates such as allophanate and methyl allophanate; biurets ...
  • In the present study, a series of novel quinazolinones functionalized with urea/thiourea/thiazole derivatives was synthesized and evaluated for their antioxidant and 5-lipoxygenase (5-LOX) inhibition activities. (eurekaselect.com)
  • Maralekere K. Prashanth and Hosakere D. Revanasiddappa, "Synthesis and Antioxidant Activity of Novel Quinazolinones Functionalized with Urea/Thiourea/Thiazole Derivatives as 5-Lipoxygenase Inhibitors", Letters in Drug Design & Discovery (2014) 11: 712. (eurekaselect.com)
  • The three-component reaction of malononitrile, aldehydes and thiourea/urea, is applied to the formation of pyrimidine derivatives. (eurekaselect.com)
  • Novel seleno- and thio-urea derivatives with potent in vitro activities against several cancer cell lines. (ox.ac.uk)
  • A series of novel selenourea derivatives and corresponding thiourea analogs were synthesized and tested against a panel of six human cancer cell lines: melanoma (1205Lu), lung carcinoma (A549), prostatic carcinoma (DU145), colorectal carcinoma (HCT116), pancreatic epithelioid carcinoma (PANC-1) and pancreatic adenocarcinoma (BxPC3). (ox.ac.uk)
  • (wikipedia.org)
  • Based on the pioneering examinations by Kelly, Etter, Jorgensen, Hine, Curran, Göbel, and De Mendoza (see review articles cited below) on hydrogen bonding interactions of small, metal-free compounds with electron-rich binding sites Schreiner and co-workers performed series of theoretical and experimental systematic investigations towards the hydrogen-bonding ability of various thiourea derivatives. (wikipedia.org)
  • Schreiner and co-workers identified and introduced electron-poor thiourea derivatives as hydrogen-bonding organocatalysts. (wikipedia.org)
  • Berkessel, Connon, Jacobsen, Nagaswa, Takemoto) have realized the potential of thiourea derivatives and developed various achiral/chiral mono- and bifunctional derivatives incorporating the electron-poor 3,5-bis(trifluoromethyl)phenyl substrate-"anchor" functionality. (wikipedia.org)
  • The present invention relates generally to pharmaceutical preparations and medical treatment methods, and more particularly agents (i.e, urea and urea derivatives, nonsteroidal anti-inflammatory drugs (NSAIDS) and anti-metabolite drugs) used alone or in combinations with each other (or with other agents) to treat or prevent certain disorders of the eye. (google.com.au)
  • Thiourea derivatives display a broad spectrum of applications in chemistry, various industries, medicines and various other fields. (mdpi.com)
  • Recently, different thiourea derivatives have been synthesized and explored for their anti-microbial properties. (mdpi.com)
  • In this study, four carbonyl thiourea derivatives were synthesized and characterized, and then further tested for their anti-amoebic properties on two potential pathogenic species of Acanthamoeba , namely A. castellanii (CCAP 1501/2A) and A. polyphaga (CCAP 1501/3A). (mdpi.com)
  • The results indicate that these newly-synthesized thiourea derivatives are active against both Acanthamoeba species. (mdpi.com)
  • The results of this study proved that these new carbonyl thiourea derivatives, especially compounds M1 and M2 provide potent cytotoxic properties toward pathogenic Acanthamoeba to suggest that they can be developed as new anti-amoebic agents for the treatment of Acanthamoeba keratitis. (mdpi.com)
  • Aqueous ink jet ink compositions comprising an aqueous carrier medium, a colorant, and cosolvents which are selected amide, sulfonamide, urea and thiourea derivatives of polyoxyalkyleneamines having a solubility in water of at least 4.5% at 25 C., have high optical density, excellent print quality, excellent dispersion stability, and resist film formation on resistors without adversely affecting decap time or crusting. (google.ca)
  • In a recent study, a series of thiourea and urea derivatives containing 1,2,4-triazole moieties were integrated and assessed for their antifungal and larvicidal action (Kocyigit-Kaymakcioglu et al. (thefreedictionary.com)
  • Benzoyl urea derivatives that are alpha helical peptide mimetics that mimic BH3-only proteins, compositions containing them, their conjugation to cell-targeting moieties, and their use in the regulation of cell death are disclosed. (sumobrain.com)
  • In this study, we used two methods of extraction and solubilization of proteins, the urea/thiourea method and the trichloroacetic acid (TCA)/acetone precipitation method, in order to determine their effectiveness in separating proteins from bean seeds by 2D-PAGE. (scirp.org)
  • Bean seeds were crushed with a pestle in a mortar to a fine powder and subsequently extracted by one of the following methods: Urea/Thiourea and or Trichloroacetic acid (TCA)/acetone precipitation. (scirp.org)
  • A protein spot was selected on the 2D-PAGE gel, digested with trypsin and analyzed by mass spectrometry (LC- MS/MS). The results suggest that thiourea/urea and TCA methods were effective and reliable for the extraction and solubilization for 2D analysis of proteins from seeds of Phaseolus vulgaris. (scirp.org)
  • In the title compound, C 14 H 10 N 4 O 5 S·0.5C 3 H 6 O, the nitro-benzoyl and nitro-phenyl groups have trans and cis configurations, respectively, with respect to the thio-urea S atom. (iucr.org)
  • 2020. Crystal structure of (E)-3-(3-(5-methyl-1-phenyl-1H-1,2,3-triazol-4-yl)-1-phenyl-1H-pyrazol-4-yl)-1-phenylprop-2-en-1-one, C27H21N5O . (cardiff.ac.uk)
  • The present invention provides novel pyridyl or phenyl ureas and analogues thereof, which are selective inhibitors of the human P2Y1 receptor. (sumobrain.com)
  • 11. A process for preparing a dispersion of an aminoplast condensate in an organic polyhydroxyl compound, which comprises condensing urea with formaldehyde in the presence of a primary hydroxyl containing poly(propylene/ethylene)oxide having a weight ratio of bound propylene oxide to bound propylene oxide of 83:17, said poly(propylene/ethylene)oxide having a hydroxyl number of about 35. (freepatentsonline.com)
  • EBDCs are absorbed by skin, mucous membranes, and respiratory and gastrointestinal tracts, and metabolized via hepatic microsomal enzymes to produce ethylene thiourea (ETU) (Houeto et al. (thefreedictionary.com)
  • The exposure of erythrocytes from the elasmobranch, Squalus acanthias, to solutions isosmotic with plasma (IM) but containing urea or hydroxyurea as the sole solute does not produce hemolysis. (sciencemag.org)
  • 2006). As part of our research on thiourea coordination chemistry, we are interested in the study of the influence of noncovalent interactions, especially hydrogen bonds and π - π stacking interactions, on the coordination modes of benzoylthiourea with transition metal ions. (iucr.org)
  • 195. Polymer Composites Mechanically Reinforced with Long Chain Alkyl and Urea Functionalized Nanotubes. (rice.edu)
  • Pupuk Urea atau pupuk nitrogen adalah salah satu pupuk yang sangat dibutuhkan oleh tanaman dalam jumlah yang banyak atau makro dibandingkan dengan jenis pupuk lainnya.dengan bentuk granul atau butiran kristal kecil yang mudah larut didalam air, sifat dari pupuk urea ini adalah higroskopis atau mudah sekali meyerap air sehingga untuk penyimpanan pupuk urea disarankan ditempat yang kering dan tertutup. (indonetwork.co.id)
  • Urea adalah adalah senyawa organik tunggal yang tersusun dari unsur karbon, hidrogen, oksigen dan nitrogen dengan rumus CON2H4 atau (NH2)2CO. (indonetwork.co.id)
  • More than 90% of world industrial production of urea is destined for use as a nitrogen-release fertilizer. (indonetwork.co.id)
  • Urea has the highest nitrogen content of all solid nitrogenous fertilizers in common use. (indonetwork.co.id)
  • Thiourea, Sodium Carbonate IR Spectrum Analysis Abstract The stability of any pharmaceutical compound is most desired quality that determines its shelf life and effectiveness.The stability can be correlated to structural and bonding properties of compound and any variation arise in these properties can be easily determined by spectroscopic analysis. (pearltrees.com)
  • 7. A method according to claim 3 wherein Step A delivers a dose of 0.01% to 15.0% urea into the vitreous body of the eye. (google.com.au)
  • 5. A method according to claim 3 wherein the agent delivered in Step A comprises 30 micrograms-7500 micrograms of urea per 50 micro liters to 100 microliters of solution. (google.com.au)
  • 15. The composition of claim 1, wherein said granule comprises 40-60% by weight urea containing fertilizer. (patents.com)
  • Jual Urea Jual Carbamide Jual Carbonyl diamide Jual Diaminomethanone Jual Carbonyldiamine Formula : CH₄N₂O / CO(NH₂)₂ Cas No : 57-13-6 Packing : 1 Kg / Botol Hub Kami : Ibu Deni Tasmadi PT. (indonetwork.co.id)
  • Urea juga di sebut dengan carbamide resin, isourea, carbonyl diamide dan carbonyldiamine. (indonetwork.co.id)
  • Jual Urea Broth Base Catalog No.: M111-500G Packing : 500 Gram Hub Kami : Ibu. (indonetwork.co.id)
  • Jual Urea Agar Base, Christensen, ISOJual Urea Agar BaseJUal ChristensenJual ISO Catalog No.: M1121-500G Packing : 500 Gram Hub Kami : Ibu. (indonetwork.co.id)
  • The benzyl thiourea analogue 3 has been reported to show activity against Gram-positive bacteria [ 12 ]. (hindawi.com)
  • In the crystal packing, thio-urea mol-ecules are linked by inter-molecular C-H⋯O hydrogen-bond inter-actions to form chains running parallel to the c axis. (iucr.org)
  • A detailed kinetic and mechanistic study of the decomposition of thioureas dioxides in basic medium has shown a process that produces dithionite, S2042-, which is preceded by an induction period which persists for as long as molecular oxygen is present in the reaction solution. (cdc.gov)
  • Among some of the intermediates detected in the decomposition of thioureas dioxides are the sulfite radical, superoxide, peroxide, and hydroxyl radical. (cdc.gov)
  • The use of more than about 10% water in the alcohol results in an intractable mass of gelatinous silica from which it is very difficult to separate a good yield of the urea. (orgsyn.org)
  • 4. A method according to claim 1 wherein the agent delivered in Step A is urea. (google.com.au)
  • 9. A method according to claim 1 wherein the agent delivered in Step A comprising 2000 micrograms of urea per 50 microliters of solution. (google.com.au)
  • Urea and thiourea can cause problems in SDS-PAGE, especially at high concentrations. (bio.net)
  • Dogfish red cells exposed to mediums containing high concentrations of urea, or no urea, reach 95 percent of their equilibrium concentration in less than 5 minutes. (sciencemag.org)
  • The N-benzoyl-2-hydroxybenzamides [ 13 ] are important pharmacophores for antibacterial activity in which the 2-hydroxy group (hydrogen bonding donor) contributes to the activity, the imide linker (preferred) or urea linker retains activity and free NH is required for high activity. (hindawi.com)
  • In the molecule of the title compound (Fig. 1), the nitrobenzoyl and nitrophenyl groups have trans and cis configurations, respectively, with respect of the thiourea S atom. (iucr.org)
  • Thus, the phenol-thio-urea would be a substance which changes from tasting bitter to most people to be a universally tasteless substance, all this without any change in the chemical or physical properties of the phenol-thio-urea. (boriel.com)