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A high-molecular-weight polymeric elastomer derived from the milk juice (LATEX) of HEVEA brasiliensis and other trees and plants. It is a substance that can be stretched at room temperature to at least twice its original length and after releasing the stress, retract rapidly, and recover its original dimensions fully.
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Fluorescence studies of the carboxyl-terminal domain of smooth muscle calponin effects of F-actin and salts. (1/241)
The fluorescence parameters of the environment-sensitive acrylodan, selectively attached to Cys273 in the C-terminal domain of smooth muscle calponin, were studied in the presence of F-actin and using varying salt concentrations. The formation of the F-actin acrylodan labeled calponin complex at 75 mm NaCl resulted in a 21-nm blue shift of the maximum emission wavelength from 496 nm to 474 nm and a twofold increase of the fluorescent quantum yield at 460 nm. These spectral changes were observed at the low ionic strengths (< 110 mm) where the calponin : F-actin stoichiometry is 1 : 1 as well as at the high ionic strengths (> 110 mm) where the binding stoichiometry is a 1 : 2 ratio of calponin : actin monomers. On the basis of previous three-dimensional reconstruction and chemical crosslinking of the F-actin-calponin complex, the actin effect is shown to derive from the low ionic strength interaction of calponin with the bottom of subdomain-1 of an upper actin monomer in F-actin and not from its further association with the subdomain-1 of the adjacent lower monomer which occurs at the high ionic strength. Remarkably, the F-actin-dependent fluorescence change of acrylodan is qualitatively but not quantitatively similar to that earlier reported for the complexes of calponin and Ca2+-calmodulin or Ca2+-caltropin. As the three calponin ligands bind to the same segment of the protein, encompassing residues 145-182, the acrylodan can be considered as a sensitive probe of the functioning of this critical region. A distance of 29 A was measured by fluorescence resonance energy transfer between Cys273 of calponin and Cys374 of actin in the 1 : 1 F-actin-calponin complex suggesting that the F-actin effect was allosteric reflecting a global conformational change in the C-terminal domain of calponin. (+info)Cysteine-scanning mutagenesis of an eukaryotic pore-forming toxin from sea anemone: topology in lipid membranes. (2/241)
Equinatoxin II is a cysteineless pore-forming protein from the sea anemone Actinia equina. It readily creates pores in membranes containing sphingomyelin. Its topology when bound in lipid membranes has been studied using cysteine-scanning mutagenesis. At approximately every tenth residue, a cysteine was introduced. Nineteen single cysteine mutants were produced in Escherichia coli and purified. The accessibility of the thiol groups in lipid-embedded cysteine mutants was studied by reaction with biotin maleimide. Most of the mutants were modified, except those with cysteines at positions 105 and 114. Mutants R144C and S160C were modified only at high concentrations of the probe. Similar results were obtained if membrane-bound biotinylated mutants were tested for avidin binding, but in this case three more mutants gave a negative result: S1C, S13C and K43C. Furthermore, mutants S1C, S13C, K20C, K43C and S95C reacted with biotin only after insertion into the lipid, suggesting that they were involved in major conformational changes occurring upon membrane binding. These results were further confirmed by labeling the mutants with acrylodan, a polarity-sensitive fluorescent probe. When labeled mutants were combined with vesicles, the following mutants exhibited blue-shifts, indicating the transfer of acrylodan into a hydrophobic environment: S13C, K20C, S105C, S114C, R120C, R144C and S160C. The overall results suggest that at least two regions are embedded within the lipid membrane: the N-terminal 13-20 region, probably forming an amphiphilic helix, and the tryptophan-rich 105-120 region. Arg144, Ser160 and residues nearby could be involved in making contacts with lipid headgroups. The association with the membrane appears to be unique and different from that of bacterial pore-forming proteins and therefore equinatoxin II may serve as a model for eukaryotic channel-forming toxins. (+info)ATP-induced opposite changes in the local environments around Cys(697) (SH2) and Cys(707) (SH1) of the myosin motor domain revealed by the prodan fluorescence. (3/241)
To obtain a consistent view of the nucleotide-induced conformational changes around Cys(697) (SH2) and Cys(707) (SH1) in skeletal myosin subfragment-1 (S-1), the two thiols were labeled with the same environmentally sensitive fluorophore, 6-acyl-2-dimethylaminonaphthalene group, using 6-acryloyl-2-dimethylaminonaphthalene (acrylodan, AD) and 6-bromoacetyl-2-dimethylaminonaphthalene (BD), respectively. The resultant fluorescent derivatives, AD-S-1 and BD-S-1, have the same fluorophore at either SH2 or SH1, which was verified by inspections of changes in the ATPases and the localization of fluorescence after tryptic digestion and CNBr cleavage for the two derivatives. Especially, AD was found to be a very useful fluorescent reagent that readily reacts with only SH2 of S-1. Measurements of the nucleotide-induced changes in fluorescence emission spectra of AD-S-1 and BD-S-1 suggested that during ATP hydrolysis the environment around the fluorophore at SH2 is very distinct from that around the fluorophore at SH1, being defined as that the former has the hydrophobic and closed characteristics, whereas the latter has the hydrophilic and open ones. The KI quenching study of the fluorescence of the two S-1 derivatives confirmed these results. The most straightforward interpretation for the present results is that during ATP hydrolysis, the helix containing SH2 is buried in hydrophobic side chains and rather reinforced, whereas the adjacent helix containing SH1 moves away from its stabilizing tertiary structural environment. (+info)Two-photon fluorescence microscopy observation of shape changes at the phase transition in phospholipid giant unilamellar vesicles. (4/241)
Using the sectioning effect of the two-photon fluorescence microscope, we studied the behavior of phospholipid giant unilamellar vesicles (GUVs) composed of pure diacylphosphatidylcholine phospholipids during the gel-to-liquid crystalline phase transition. We used the well-characterized excitation generalized polarization function (GP(ex)) of 6-dodecanoyl-2-dimethylamine-naphthalene (LAURDAN), which is sensitive to the changes in water content in the lipid vesicles, to monitor the phase transition in the GUVs. Even though the vesicles do not show temperature hysteresis at the main phase transition, we observed different behaviors of the vesicle shape, depending on how the GUV sample reaches the main phase transition. During the cooling cycles, we observed an increase in the vesicle diameter at the phase transition ( approximately 0.5-1%), followed by a decrease in the diameter when the vesicle reached the gel phase. During the heating cycles and close to the phase transition temperature, a surprising behavior is observed, showing a sequence of different vesicle shapes as follows: spherical-polygonal-ellipsoidal. We attribute these changes to the effect of lipid domain coexistence on the macroscopic structure of the GUVs. The "shape hysteresis" in the GUVs is reversible and largely independent of the temperature scan rate. In the presence of 30 mol% of cholesterol the events observed at the phase transition in the GUVs formed by pure phospholipids were absent. (+info)Hydration of lipoplexes commonly used in gene delivery: follow-up by laurdan fluorescence changes and quantification by differential scanning calorimetry. (5/241)
Lipoplexes, which are formed spontaneously between cationic liposomes and negatively charged nucleic acids, are commonly used for gene and oligonucleotide delivery in vitro and in vivo. Being assemblies, lipoplexes can be characterized by various physicochemical parameters, including size distribution, shape, physical state (lamellar, hexagonal type II and/or other phases), sign and magnitude of electrical surface potential, and level of hydration at the lipid-DNA interface. Only after all these variables will be characterized for lipoplexes with a broad spectrum of lipid compositions and DNA/cationic lipid (L(+)) mole (or charge) ratios can their relevance to transfection efficiency be understood. Of all these physicochemical parameters, hydration is the most neglected, and therefore the focus of this study. Cationic liposomes composed of DOTAP without and with helper lipids (DOPC, DOPE, or cholesterol) or of DC-Chol/DOPE were complexed with pDNA (S16 human growth hormone) at various DNA(-)/L(+) charge ratios (0.1-3.2). (DOTAP=N-(1-(2,3-dioleoyloxy)propyl)-N,N,N-trimethylammonium chloride; DC-Chol=(3beta-[N-(N',N'-dimethylaminoethane)-carbamoyl]-cholester ol; DOPC=1, 2-dioleoyl-sn-glycero-3-phosphocholine; DOPE=1, 2-dioleoyl-sn-glycero-3-phosphoethanolamine). The hydration levels of the different cationic liposomes and the DNA separately are compared with the hydration levels of the lipoplexes. Two independent approaches were applied to study hydration. First, we used a semi-quantitative approach of determining changes in the 'generalized polarization' (GP) of laurdan (6-dodecanoyl-2-dimethylaminonaphthalene). This method was recently used extensively and successfully to characterize changes of hydration at lipid-water interfaces. Laurdan excitation GP at 340 nm (GP(340)DOTAP. The GP(340) of lipoplexes of all lipid compositions (except those based on DC-Chol/DOPE) was higher than the GP(340) of the cationic liposomes alone and increased with increasing DNA(-)/L(+) charge ratio, reaching a plateau at a charge ratio of 1. 0, suggesting an increase in dehydration at the lipid-water interface with increasing DNA(-)/L(+) charge ratio. Confirmation was obtained from the second method, differential scanning calorimetry (DSC). DOTAP/DOPE lipoplexes with charge ratio 0.44 had 16.5% dehydration and with charge ratio 1.5, 46.4% dehydration. For DOTAP/Chol lipoplexes with these charge ratios, there was 17.9% and 49% dehydration, respectively. These data are in good agreement with the laurdan data described above. They suggest that the dehydration occurs during lipoplex formation and that this is a prerequisite for the intimate contact between cationic lipids and DNA. (+info)Electrostatic properties of membranes containing acidic lipids and adsorbed basic peptides: theory and experiment. (6/241)
The interaction of heptalysine with vesicles formed from mixtures of the acidic lipid phosphatidylserine (PS) and the zwitterionic lipid phosphatidylcholine (PC) was examined experimentally and theoretically. Three types of experiments showed that smeared charge theories (e.g., Gouy-Chapman-Stern) underestimate the membrane association when the peptide concentration is high. First, the zeta potential of PC/PS vesicles in 100 mM KCl solution increased more rapidly with heptalysine concentration (14.5 mV per decade) than predicted by a smeared charge theory (6.0 mV per decade). Second, changing the net surface charge density of vesicles by the same amount in two distinct ways produced dramatically different effects: the molar partition coefficient decreased 1000-fold when the mole percentage of PS was decreased from 17% to 4%, but decreased only 10-fold when the peptide concentration was increased to 1 microM. Third, high concentrations of basic peptides reversed the charge on PS and PC/PS vesicles. Calculations based on finite difference solutions to the Poisson-Boltzmann equation applied to atomic models of heptalysine and PC/PS membranes provide a molecular explanation for the observations: a peptide adsorbing to the membrane in the presence of other surface-adsorbed peptides senses a local potential more negative than the average potential. The biological implications of these "discreteness-of-charge" effects are discussed. (+info)Two photon fluorescence microscopy of coexisting lipid domains in giant unilamellar vesicles of binary phospholipid mixtures. (7/241)
Images of giant unilamellar vesicles (GUVs) formed by different phospholipid mixtures (1,2-dipalmitoyl-sn-glycero-3-phosphocholine/1, 2-dilauroyl-sn-glycero-3-phosphocholine (DPPC/DLPC) 1:1 (mol/mol), and 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine/1, 2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPE/DPPC), 7:3 and 3:7 (mol/mol) at different temperatures were obtained by exploiting the sectioning capability of a two-photon excitation fluorescence microscope. 6-Dodecanoyl-2-dimethylamino-naphthalene (LAURDAN), 6-propionyl-2-dimethylamino-naphthalene (PRODAN), and Lissamine rhodamine B 1,2-dihexadecanoyl-sn-glycero-3-phosphoethanolamine (N-Rh-DPPE) were used as fluorescent probes to reveal domain coexistence in the GUVs. We report the first characterization of the morphology of lipid domains in unsupported lipid bilayers. From the LAURDAN intensity images the excitation generalized polarization function (GP) was calculated at different temperatures to characterize the phase state of the lipid domain. On the basis of the phase diagram of each lipid mixture, we found a homogeneous fluorescence distribution in the GUV images at temperatures corresponding to the fluid region in all lipid mixtures. At temperatures corresponding to the phase coexistence region we observed lipid domains of different sizes and shapes, depending on the lipid sample composition. In the case of GUVs formed by DPPE/DPPC mixture, the gel DPPE domains present different shapes, such as hexagonal, rhombic, six-cornered star, dumbbell, or dendritic. At the phase coexistence region, the gel DPPE domains are moving and growing as the temperature decreases. Separated domains remain in the GUVs at temperatures corresponding to the solid region, showing solid-solid immiscibility. A different morphology was found in GUVs composed of DLPC/DPPC 1:1 (mol/mol) mixtures. At temperatures corresponding to the phase coexistence, we observed the gel domains as line defects in the GUV surface. These lines move and become thicker as the temperature decreases. As judged by the LAURDAN GP histogram, we concluded that the lipid phase characteristics at the phase coexistence region are different between the DPPE/DPPC and DLPC/DPPC mixtures. In the DPPE/DPPC mixture the coexistence is between pure gel and pure liquid domains, while in the DLPC/DPPC 1:1 (mol/mol) mixture we observed a strong influence of one phase on the other. In all cases the domains span the inner and outer leaflets of the membrane, suggesting a strong coupling between the inner and outer monolayers of the lipid membrane. This observation is also novel for unsupported lipid bilayers. (+info)A further cohort study of workers employed at a factory manufacturing chemicals for the rubber industry, with special reference to the chemicals 2-mercaptobenzothiazole (MBT), aniline, phenyl-beta-naphthylamine and o-toluidine. (8/241)
OBJECTIVES: To investigate mortality and cancer morbidity in workers from a factory manufacturing chemicals for the rubber industry. METHODS: The mortality (1955-96) and cancer morbidity experience (1971-92) of a cohort of 2160 male production workers from a chemical factory in north Wales were investigated. All subjects had at least 6 months employment at the factory and some employment in the period 1955-84. Detailed job histories were abstracted from company computerised records and estimates of individual cumulative exposure to 2-mercaptobenzothiazole (MBT) and its derivatives were obtained, with a job exposure matrix derived by a former factory hygienist. Durations of employment in the aniline, phenyl-beta-naphthylamine (PBN) and o-toluidine departments were also calculated. Two analytical approaches were used, indirect standardisation and Poisson regression. RESULTS: Based on serial rates for the general population of England and Wales, observed mortality for the total cohort was close to expectation for all causes (observed (obs) deaths 1131, expected (exp) deaths 1114.5, standardised mortality ratio (SMR) 101), and for all cancers (obs 305, exp 300.2, SMR 102). There was a significant (p < 0.05) excess mortality from cancer of the bladder in the 605 study subjects potentially exposed to one or more of the four chemicals being investigated (obs 9, exp 3.25, SMR 277, 95% confidence interval (95% CI) 127 to 526). This excess was dependent primarily on deaths occurring > 20 years after first exposure in those who started employment before 1955 (obs 7, exp 1.25, SMR 560, 95% CI 225 to 1154, p < 0.001). There were 30 subjects in the total study cohort who, on the basis of death certificates or cancer registration particulars, had had malignant bladder cancer. In separate analyses of the four exposure history variables (after adjustment for age), Poisson regression showed significant positive trends for risk of notification of bladder cancer increasing with cumulative duration of employment in the PBN (p < 0.001) and o-toluidine departments (p < 0.01); similar findings were not obtained for cumulative exposure to MBT or for duration of employment in the aniline department. In a simultaneous analysis of all four chemical exposure variables, a significant positive trend remained for duration of employment with exposure to PBN (p < 0.05). Further analyses of all cases of bladder cancer (malignant and benign diagnoses) used employment histories lagged by 15 years; similar findings were obtained. CONCLUSIONS: It seems likely that some members of this cohort have had occupational bladder cancer. Confident interpretation is difficult because of small numbers in the exposed subcohorts, relatively crude measures of exposure assessment for the four chemicals under study, and presence of unconsidered potential chemical confounders. The simplest interpretation of the findings about bladder cancer may be that PBN (or a chemical reagent or chemical intermediate associated with its production at this factory in the 1930s and 1940s) is a bladder carcinogen. Priority should be given, however, to obtaining information on the cancer experience of other working populations exposed to PBN or to o-toluidine. (+info)
Phase-fluorometry study on dielectric relaxation of acrylodan-labeled human serum albumin<...
Spectral imaging to measure heterogeneity in membrane lipid packing. - Radcliffe Department of Medicine
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Effect of caltropin on caldesmon-actin interaction. - Semantic Scholar
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Bladder cancer
86 (2): 289-94. doi:10.1002/(sici)1097-0215(20000415)86:2. 3.0.co;2-m. PMID 10738259. Yan H, Ying Y, Xie H, Li J, Wang X, He L ... 105 (2): 123-38. doi:10.1016/0304-3835(96)04284-x. PMID 8697435. Chaudhary KS, Lu QL, Abel PD, Khandan-Nia N, Shoma AM, el Baz ... 3.0.CO;2-Q. PMID 10931463. van Osch FH, Jochems SH, van Schooten FJ, Bryan RT, Zeegers MP (June 2016). "Quantified relations ... 10 (2): 120-35. PMC 2483317. PMID 18660854. Chou R, Gore JL, Buckley D, Fu R, Gustafson K, Griffin JC, et al. (December 2015 ...
Prodan (dye)
"N,N-Dimethyl-6-propionyl-2-naphthylamine". Merck. Sigma-Aldrich. Retrieved 22 October 2019. Safety Data Sheet. Life ... 6-Propionyl-2-Dimethylaminonaphthalene)". Thermo Fisher Scientific. Retrieved 22 October 2019. "Prodan". PubChem. National ...
NOBIN
... (2-amino-2'-hydroxy-1,1'-binaphthyl) is an organic molecule used for asymmetric catalysis. NOBIN is related to BINOL and ... NOBIN is prepared by oxidative cross coupling of 2-naphthol and 2-naphthylamine. The oxidative source is metal ions in solution ...
Chlornaphazine
... , a derivative of 2-naphthylamine, is a nitrogen mustard that was developed in the 1950s for the treatment of ... N,N-Bis(2-Chloroethyl)-2-Naphthylamine (Chlornaphazine), International Agency for Research on Cancer. ... Videbaek, A.; Kaae, S. (1954). "2-Naphthylbis(chloroethyl)amine in the treatment of malignant diseases, particularly Hodgkin's ...
N-(1-Naphthyl)ethylenediamine
However, it is a weaker bidentate ligand as the nitrogen atom in the naphthylamine group is weakly coordinating due to the ... This compound can be prepared by the reaction of 1-naphthylamine with 2-chloroethanamine. It is commercially available as the ... N-(1-Naphthyl)ethylenediamine undergoes most reactions typical to naphthylamine and primary amines such as diazotation. Similar ...
Otto Michael Ludwig Leichtenstern
2-NA) was involved in human bladder tumorigenesis. With Adolph Strümpell (1853-1925), the eponymous "Strümpell-Leichtenstern ... In 1898 he suspected that the compound 2-naphthylamine ( ...
Pyrrolidonyl-β-naphthylamide
In the presence of bacteria with pyrrolidonyl peptidase, it is broken down to pyroglutamic acid and 2-naphthylamine. To detect ...
Solvent Black 3
Sudan Black is formed by coupling of diazotized 4-phenylazo-1-naphthylamine with 2,3-dihydro-2,2-dimethyl-1H-perimidine. ... Therefore the main product expected was 2,3-dihydro-2,2dimethyl-6-[(4-phenylazo-1-naphthalenyl)-azo]-1H-perimidine. However the ... 3-dihydro-2,2-dimethyl-4-[(4-phenylazo-1-naphthalenyl)-azo]-1H-perimidine. Hunger, Klaus; Mischke, Peter; Rieper, Wolfgang; ...
Orange B
... specifically 2-naphthylamine). The only supplier in the United States, the William J. Stange Company, subsequently stopped ...
2-Amino-1,2-dihydronaphthalene
2-Amino-1,2-dihydronapthalene (2-ADN), also known as 2-aminodilin (2-AD), is a stimulant drug. It is a rigid analogue of ... 2-Aminoindane 2-Aminotetralin 2-Naphthylamine Hathaway BA, Nichols DE, Nichols MB, Yim GK (May 1982). "A new, potent, ... It is closely related to 2-aminotetralin (2-amino-1,2,3,4-tetrahydronaphthalene), which also substitutes for amphetamine, and ... 2-dihydronaphthalene". Journal of Medicinal Chemistry. 25 (5): 535-8. doi:10.1021/jm00347a011. PMID 6123601.. ...
3-Dimethylaminoacrolein
The amidine formed with 2-naphthylamine and the dimethyl sulfate adduct can be cyclized with sodium methoxide to give benzo[f] ... The use of 3-dimethylaminoacrolein for the synthesis of 2-chloronicotinic acid (2-CNA) is of industrial interest as an ... The resulting esters of 2-chloropyridine carboxylic acid can be hydrolyzed smoothly to 2-chloronicotinic acid. It reacts weakly ... 496-504, doi:10.1002/ange.19760881503 S. Makhseed; H.M.E. Hassaneen; M.H. Elnagdi (2007), "Studies with 2-(Arylhydrazono) ...
Kenneth Koe
4-tetrahydro-1-naphthylamine, a new uptake inhibitor with selectivity for serotonin". The Journal of Pharmacology and ... Grohol, John M.; Founder, Psy D.; read, Editor-in-Chief Last updated: 8 Jul 2018 ~ 2 min (2017-10-12). "Top 25 Psychiatric ... Koe, BK (September 1983). "Sertraline, 1S,4S-N-methyl-4-(3,4-dichlorophenyl)-1,2,3, ...
Tametraline
4-tetrahydro-1-naphthylamine, a new uptake inhibitor with selectivity for serotonin". The Journal of Pharmacology and ... 2.2.2]octane) JNJ-7925476 Lometraline Nefopam Sertraline Koe BK, Weissman A, Welch WM, Browne RG (September 1983). "Sertraline ...
Development and discovery of SSRI drugs
4-Tetrahydro-1-Naphthylamine, a New Uptake Inhibitor with Selectivity for Serotonin" (PDF). The Journal of Pharmacology and ... Table 2 Comparison of the chemical properties of SSRI drugs Compounds containing an aryloxypropylamine motif in their structure ... 454 (2-3): 183-188. doi:10.1016/s0014-2999(02)02557-8. PMID 12421645. Koe, B. Kenneth; Weissman, Albert; Welch, Willard M.; ... Table 3 Comparative pharmacology of SSRIs tmax = Time to peak plasma level after oral dose; VD = Volume of distribution; t1/2 ...
Benzidine
ISBN 0-471-60180-2. Shine, H. J.; Zmuda, H.; Park, K. H.; Kwart, H.; Horgan, A. G.; Collins, C.; Maxwell, B. E. (1981). " ... As with some other aromatic amines such as 2-naphthylamine, benzidine has been significantly withdrawn from use in most ... First, the nitrobenzene is converted to 1,2-diphenylhydrazine, usually using iron powder as the reducing agent. Treatment of ... These derivatives include, in order of scale, the following: 3,3'-Dichlorobenzidine o-tolidine, 2,2'-dimethyl-4,4'-benzidine o- ...
Semtex
antioxidant: N-phenyl-2-naphthylamine. 0.5%. 0.5%. 0.5% pigment. 0.5% Sudan IV (reddish brown to red). 0.5% Sudan I (red-orange ... Explosia's brief historical document states it was 1964,[2] but most other credible sources state it was in 1966. Most of these ... First, ethylene glycol dinitrate was used, later switched to 2,3-dimethyl-2,3-dinitrobutane (DMDNB) or p-mononitrotoluene (1- ... 2] Batches of Semtex made before 1990, however, are untagged, though it is not known whether there are still major stocks of ...
C10H9N
The molecular formula C10H9N (molar mass: 143.19 g/mol) may refer to: Benzazepine Lepidine 1-Naphthylamine 2-Naphthylamine ...
Arylamine N-acetyltransferase
Other names in common use include arylamine acetylase, beta-naphthylamine N-acetyltransferase, 4-aminobiphenyl N- ... 2-naphthylamine N-acetyltransferase, arylamine acetyltransferase, indoleamine N-acetyltransferase, N-acetyltransferase, p- ...
List of IARC Group 1 Agents - Carcinogenic to humans
November 2, 2009 ‐‐ IARC has updated the cancer assessments of several personal habits and household exposures that cause ... 4-diium-2-yl)methylideneamino]carbamate) - GHS Category 1B Carcinogen Chlornapazine (N,N-Bis(2-chloroethyl)-2-naphthylamine) ... 2-chloroaniline) (MOCA) MOPP and other combined chemotherapy including alkylating agents Mustard gas (Sulfur mustard) 2- ... Naphthylamine Neutron radiation Nickel compounds 4-(N-Nitrosomethylamino)-1-(3-pyridyl)-1-butanone (NNK) N-Nitrosonornicotine ( ...
Control of Substances Hazardous to Health Regulations 2002
Supply is prohibited, during the course of work or for use at work, of (reg.4(3), (4)/ Sch.2, item.11): Any of the substances ... Regulation 9(2) [Various authors] (2007). Tolley's Health and Safety at Work Handbook 2008. London: Butterworths. ISBN 978-0- ... Use of the following substances is prohibited for the purposes specified (reg.4(1)/ Sch.2): The following are excluded from the ... The assessment must include consideration of any information provided by the supplier of a substance (CHIPS) (reg.6(2)(b)) and ...
Nile blue
This might take only 1-2 minutes. Then the sample is thoroughly rinsed in water (for one to two hours). Afterwards, the stained ... Alternatively, the product of an acid-catalyzed condensation of 4-nitroso-N,N-dialkylaniline with 2-naphthol (a salt of 9-( ... 2.0.CO;2. PMID 11202363. Kanitz, Andreas; Hartmann, Horst (1999). "Preparation and Characterization of Bridged Naphthoxazinium ... Nile Blue and related naphthoxazinium dyes can be prepared by acid-catalyzed condensation of either 5-(dialkylamino)-2- ...
Pyroglutamyl-peptidase I
791 (2): 117-122. doi:10.1016/0167-4838(84)90001-3. Awadé AC, Cleuziat P, Gonzalès T, Robert-Baudouy J (September 1994). " ... amino acid generally not being Pro PGPEP1 Pyrrolidonyl-beta-naphthylamide P-Dimethylaminocinnamaldehyde Pyroglutamic acid 2- ... Naphthylamine Panosian KJ, Edberg SC (March 1989). "Measurement of constitutive L-pyrrolidonyl peptidase activity from ...
List of MeSH codes (D04)
1-naphthylamine MeSH D04.615.638.845.800 - sertraline MeSH D04.615.638.850 - 2-naphthylamine MeSH D04.615.638.870 - 1- ... 25-hydroxyvitamin d 2 MeSH D04.808.247.808.489 - fusidic acid MeSH D04.808.247.808.607 - lanosterol MeSH D04.808.247.808.756 - ... 8-hydroxy-2-(di-n-propylamino)tetralin MeSH D04.615.638.960.492 - levobunolol MeSH D04.615.638.960.585 - mibefradil MeSH ... 25-hydroxyvitamin d 2 MeSH D04.808.247.222.537 - ergosterol MeSH D04.808.247.222.857 - sitosterols MeSH D04.808.247.808 - ...
Robert A. Kehoe
2, Winter 1999, at 95. Loeb (1999) Peterson, M (2007). "The precautionary principle should not be used as a basis for decision- ... Retrieved April 2, 2020. The smelter building for the most part could only be described as incredibly dirty, poorly ventilated ... 78 (2): 71-8. doi:10.1006/enrs.1997.3808. PMID 9719610. Jamie Lincoln Kitman (2000-03-20). "The Secret History of Lead". The ... 78 (2): 79-85. doi:10.1006/enrs.1997.3807. PMID 9719611. Kehoe RA (1953). "Experimental Studies on the Inhalation of Lead by ...
Naphthylamine
... can refer to either of two isomeric chemical compounds: 1-Naphthylamine 2-Naphthylamine This set index page lists ...
List of IARC Group 1 carcinogens
November 2, 2009 ‐‐ IARC has updated the cancer assessments of several personal habits and household exposures that cause ... 2-Naphthylamine Acetaldehyde associated with consumption of alcoholic beverages 4-Aminobiphenyl Aflatoxins Aristolochic acids, ... 2-chloroaniline) (MOCA) MOPP and other combined chemotherapy including alkylating agents Mustard gas (Sulfur mustard) 2- ... Naphthylamine Neutron radiation Nickel compounds2 4-(N-Nitrosomethylamino)-1-(3-pyridyl)-1-butanone (NNK) N-Nitrosonornicotine ...
Amine
Anilines and naphthylamines form more stable diazonium salts, which can be isolated in the crystalline form.[14] Diazonium ... 2. R. 1. ,. :. ⏟. a. m. i. n. e. +. R. 3. −. C. O. ‖. −. OH. ⏟. carboxylic acid. −. ,. H. −. N. +. ,. R. 2. R. 1. ,. −. H. +. R ... 2. R. 1. ,. −. C. O. ‖. −. R. 3. ⏟. a. m. i. d. e. +. H. 2. O. ⏟. w. a. t. e. r. {\displaystyle {\underbrace {\ce {H-\!\!{\ ... 2. +. HNO. 2. +. HX. ⟶. AN. +. 2. X. −. +. 2. H. 2. O. {\displaystyle {\ce {ANH2 + HNO2 + HX -, AN + 2X^- + 2 H2O}}}. ...
Aniline
... but these effects are now attributed to naphthylamines, not anilines.[6] ... 2 C6H5NH2 + CH2O → CH2(C6H4NH2)2 + H2O. The resulting diamine is the precursor to 4,4'-MDI and related diisocyanates. ... 2 (3): 1485-1509. doi:10.3390/sym2031485. ISSN 2073-8994.. *^ G. M. Wójcik "Structural Chemistry of Anilines" in Anilines ( ... C6H5NH2 + 2 CH3OH → C6H5N(CH3)2 + 2H2O. N-Methylaniline and dimethylaniline are colorless liquids with boiling points of 193- ...
Bechamp reaction
The Application of the Béchamp Reaction to α-Naphthylamine". J. Am. Chem. Soc. 56: 151. doi:10.1021/ja01316a047. C. S. Hamilton ... 2. doi:10.1002/0471264180.or002.10. ISBN 0471264180. John F. Stolz; Eranda Perera; Brian Kilonzo; Brian Kail; Bryan Crable; ...
Aniline
... but these effects are now attributed to naphthylamines, not anilines.[6] ... 2 C6H5NH2 + CH2O → CH2(C6H4NH2)2 + H2O. The resulting diamine is the precursor to 4,4'-MDI and related diisocyanates. ... C6H5NH2 + 2 CH3OH → C6H5N(CH3)2 + 2H2O. N-Methylaniline and dimethylaniline are colorless liquids with boiling points of 193- ... Aniline is an organic compound with the formula C6H5NH2. Consisting of a phenyl group attached to an amino group, aniline is ...
Amine
Anilines and naphthylamines form more stable diazonium salts, which can be isolated in the crystalline form.[14] Diazonium ... 2. R. 1. ,. :. ⏟. a. m. i. n. e. +. R. 3. −. C. O. ‖. −. OH. ⏟. carboxylic acid. −. ,. H. −. N. +. ,. R. 2. R. 1. ,. −. H. +. R ... 2. R. 1. ,. −. C. O. ‖. −. R. 3. ⏟. a. m. i. d. e. +. H. 2. O. ⏟. w. a. t. e. r. {\displaystyle {\underbrace {\ce {H-\!\!{\ ... 2. +. HNO. 2. +. HX. ⟶. AN. +. 2. X. −. +. 2. H. 2. O. {\displaystyle {\ce {ANH2 + HNO2 + HX -, AN + 2X^- + 2 H2O}}}. ...
List of IARC Group 3 carcinogens
... pyrene 1-Naphthylamine 1-Naphthylthiourea (ANTU) Nithiazide 5-Nitro-ortho-anisidine 9-Nitroanthracene 7-Nitrobenz[a]anthracene ... 2 HC Red No. 3 HC Yellow No. 4 Hepatitis D virus Hexachlorobutadiene Hexachlorophene Human T-cell lymphotropic virus type II ... 9 Dapsone Decabromodiphenyl oxide Deltamethrin Diacetylaminoazotoluene Diallate 1,2-Diamino-4-nitrobenzene 1,4-Diamino-2- ... nitrobenzene 2,5-Diaminotoluene Diazepam Diazomethane Dibenz[a,c]anthracene Dibenz[a,j]anthracene Dibenzo-p-dioxin Dibenzo[a,e] ...
Malayan Emergency
N-Dimethyl-1-naphthylamine onto crops such as sweet potatoes and maize. Many Commonwealth personnel who handled and/or used ... 978-1-909026-29-2. .. *^ Leary, John D. (1995). Violence and the Dream People: The Orang Asli in the Emergency 1948-1960. ... 25 (2): 203. doi:10.1177/0968344516671738. S2CID 159509434 - via Sage Journals.. *^ Newsinger, John (2013). The Blood Never ... 25 (2): 210. doi:10.1177/0968344516671738. S2CID 159509434 - via Sage Journals.. *^ "New documents reveal cover-up of 1948 ...
Trypan blue
Naphthylamines. Hidden categories: *Chemical articles with multiple compound IDs. *Multiple chemicals in an infobox that need ... 3Z,3'Z)-3,3'-[(3,3'-dimethylbiphenyl-4,4'-diyl)di(1Z)hydrazin-2-yl-1-ylidene]bis(5-amino-4-oxo-3,4-dihydronaphthalene-2,7- ... Trypan blue is derived from toluidine, that is, any of several isomeric bases, C14H16N2, derived from toluene. Trypan blue is ...
Ivan Ostromislensky
He also proposed organic additions to rubber, such as toluidine and naphthylamine, in order to improve its properties. Those ... 2 H2O This process was used in the United States to produce government rubber during World War II, and remains in use today in ...
Induline
... rosinduline from benzene-azo-α-naphthylamine and aniline and naphthinduline from benzene-azo-α-naphthylamine and naphthylamine ... Isorosinduline is obtained from quinone dichlorimide and phenyl-β-naphthylamine; ... The indulines may be subdivided into the following groups: (1) benzindulines, derivatives of phenazine; (2) isorosindulines; ...
Textile industry in Bangladesh
... regarding exposure to textile dyes and occupational bladder cancer due to aniline dye intermediates such as beta-naphthylamine ... 35 (1-2): 45-51. PMID 18516877. Metgud, D C; Khatri, S; Mokashi, M G; Saha, P N (2008). "An ergonomic study of women workers in ... Latifee, Enamul Hafiz (2 February 2016). "RMG sector towards a thriving future". The Daily Star. Paul, Ruma; Quadir, Serajul (4 ... 12 (2). Uddin, Anam. "Garment Industry in Bangladesh: An Era of Globalization and Neo-Liberalization". Middle East Journal of ...
FDU-NNE1
... it is suspected that metabolic hydrolysis of the amide group of FDU-NNE1 will release 1-naphthylamine, a known carcinogen. 5F- ... 33 (2): 244-259. doi:10.1007/s11419-015-0268-7. PMC 4525202. PMID 26257833. v t e. ...
Wilhelm Hueper
... including benzidine and β-Naphthylamine. Hueper warned them explicitly of dangers to their workers in 1937, and throughout 1938 ... 2] Asbestos: Medical and Legal Aspects, Fifth Edition, by Barry I. Castleman (Mar. 2005) "W. C. Hueper Papers 1920-1981". ...
Bucherer reaction
The Bucherer reaction in organic chemistry is the reversible conversion of a naphthol to a naphthylamine in the presence of ... The enamine eliminates sodium bisulfite with formation of naphthylamine 6. It is important to stress that this is a reversible ... C10H7-2-OH + NH3 ⇌ C10H7-2-NH2 + H2O The French chemist Robert Lepetit was the first to discover the reaction in 1898. The ... It is also useful for transamination reactions of 2-aminonaphthalenes. In the first step of the reaction mechanism a proton ...
List of IARC Group 3 Agents - Not classifiable as to its carcinogenicity to humans
... pyrene 1-Naphthylamine 1-Naphthylthiourea (ANTU) Nithiazide 5-Nitro-ortho-anisidine 9-Nitroanthracene 7-Nitrobenz[a]anthracene ... 2 HC Red No. 3 HC Yellow No. 4 Hepatitis D virus Hexachlorobutadiene Hexachlorophene Human T-cell lymphotropic virus type II ... 9 Dapsone Decabromodiphenyl oxide Deltamethrin Diacetylaminoazotoluene Diallate 1,2-Diamino-4-nitrobenzene 1,4-Diamino-2- ... nitrobenzene 2,5-Diaminotoluene Diazepam Diazomethane Dibenz[a,c]anthracene Dibenz[a,j]anthracene Dibenzo-p-dioxin Dibenzo[a,e] ...
Bechamp reduction
The reaction was first used by Antoine Béchamp to reduce nitronaphthalene and nitrobenzene to naphthylamine and aniline, ... Org React 2, 428 (1944). McKetta, John J. (1989). "Nitrobenzene and Nitrotoluene". Encyclopedia of Chemical Processing and ... Mendenhall, P. M. G.; Smith, Peter A. S. (1966). "2-Nitrocarbazole". Org. Synth. 46: 85. doi:10.15227/orgsyn.046.0085. M. J. ... Mahood, S. A.; Schaffner, P. V. L. (1931). "2,4-Diaminotoluene". Org. Synth. 11: 32. doi:10.15227/orgsyn.011.0032. Bavin, G. ...
Mahmoud K. Muftić
Nature 201:622-623 Muftic MK (1964). N-acetyl-naphthylamine esterase activity as a virulence test in Mycobacteria. Zentralbl ... The Laryngoscope Volume 68, Issue 2, pp. 131-132. Muftic MK (1958). Advances in the pharmacological study of cerase-A new anti- ... British Journal of Diseases of the Chest, Volume 58, Issue 2, pp. 85-89. DOI: 10.1016/S0007-0971(64)80037-1. Muftić, M. (1964 ... Nigerian Journal of Islam, 1:2 (1971), pp. 23-28. Patents Kutzsche A, Muftic MK, Peissker H (1969). 3-methyl-5-isopropylphenyl ...
NNE1
It is suspected that metabolic hydrolysis of the amide group of NNE1 may release 1-naphthylamine, a known carcinogen, given the ... 365 (2): 437-446. doi:10.1124/jpet.117.246983. PMC 5932312. PMID 29549157. Blaazer AR, Lange JH, van der Neut MA, Mulder A, den ...
N-Phenyl-2-naphthylamine 10586-X
Testing Status of N-Phenyl-2-naphthylamine 10586-X. CASRN: 135-88-6. Formula: C16-H13-N. Synonyms/Common Names. *N-Phenyl-2- ... Toxicology and Carcinogenesis Studies of N-Phenyl-2-Naphthylamine (CASRN 135-88-6) in F344/N Rats and B6C3F1 Mice (Feed Studies ... Citation: Metabolism of N-phenyl-2-naphthylamine (PNA) after Feeding to Fischer 344 Rats. October 15, 1986 ...
N-Phenyl-2-naphthylamine (IARC Summary & Evaluation, Supplement7, 1987)
Phenyl(b-naphthyl)amine *Phenyl-b-naphthylamine *N-Phenyl-b-naphthylamine *Stabilizator AR Last updated: 11 March 1998 See Also ... 7. Wang, H., Wang, D. & Dzeng, R. (1984) Carcinogenicity of N-phenyl-1-naphthylamine and N-phenyl-2-naphthylamine in mice. ... naphthylamine in rats after intragastric administration. Cancer Lett., 16, 203-206 4. Green, U., Holste, J. & Spikermann, A.R ... N-Phenyl-2-naphthylamine is not classifiable as to its carcinogenicity to humans (Group 3). For definition of the italicized ...
N-Phenyl-2-Naphthylamine (IARC Summary & Evaluation, Volume 16, 1978)
N-PHENYL-2-NAPHTHYLAMINE. VOL.: 16 (1978) (p. 325) 5. Summary of Data Reported and Evaluation1. 5.1 Animal data. N-Phenyl-2- ... naphthylamine has been tested in mice by oral and single subcutaneous administration and in a small number of dogs by oral ... In one study, in one factory, of men with known exposure to N-phenyl-2-naphthylamine in rubber processing under controlled ... In the latter study, exposure was mixed but probably included exposure to N-phenyl-2-naphthylamine for many workers. These ...
2-naphthylamine | definition of 2-naphthylamine by Medical dictionary
What is 2-naphthylamine? Meaning of 2-naphthylamine medical term. What does 2-naphthylamine mean? ... Looking for online definition of 2-naphthylamine in the Medical Dictionary? 2-naphthylamine explanation free. ... 2-naphthylamine. Also found in: Wikipedia. 2-naphthylamine. an industrial chemical identified as a urinary bladder carcinogen. ... Nitrosamine, 2-naphthylamine, and 4-aminobiphenyl are possible carcinogenic agents found in cigarette smoke3.. RISK FACTORS FOR ...
1,2,3,4-tetrahydro-1-naphthylamine - Substance Information - ECHA
N-ethyl-1-(4-(phenylazo)phenylazo)-2-naphthylamine - Substance Information - ECHA
2-Naphthylamine-5,7-disulfonic acid supplier | CasNO.118-33-2
Find quality suppliers and manufacturers of 2-Naphthylamine-5,7-disulfonic acidfor price inquiry.where to buy 2-Naphthylamine-5 ... 7-disulfonic acid.Also offer free database of 2-Naphthylamine-5,7-disulfonic acid including MSDS sheet(poisoning, toxicity, ... naphthylamine -1,5,7 - 3-sulfonic acid in water at 110-120 °C 4h, cooling and filtering, washing in sodium sulfate solution, ... Naphthylamine-5,7-disulfonic acid;6-AMINO-NAPHTHALENE-1,3-DISULFONIC ACID;Naphthalene-1,3-disulfonic acid, 6-amino-;6-Amino-1, ...
N-(2-Hydroxyethyl)-α-naphthylamine (CAS 2933-59-7) Market Research Report 2018
... α-naphthylamine (CAS 2933-59-7) Market Research Report 2018 aims at providing comprehensive data on n-(2-hydroxyethyl)-α- ... α-naphthylamine prices in other regions. 7. N-(2-HYDROXYETHYL)-α-NAPHTHYLAMINE END-USE SECTOR 7.1. N-(2-hydroxyethyl)-α- ... α-NAPHTHYLAMINE PATENTS. Abstract. Description. Summary of the invention. Detailed description of the invention. 5. N-(2- ... α-naphthylamine consumers globally. - Europe. - Asia. - North America. - Other regions. *Please note that N-(2-Hydroxyethyl)-α- ...
606-57-5, 1-nitro-2-naphthylamine, CAS No 606-57-5 1-nitro-2-naphthylamine nl
1-nitro-2-naphthylamine ; physical and chemical property of 606-57-5, 1-nitro-2-naphthylamine is provided by ChemNet.com ... CAS No: 606-57-5, Chemical Name: 1-nitro-2-naphthylamine. Home , Products , Suppliers , Offer to Buy , Offer to Sell , Chemical ... 1-nitro-2-naphthylamine. Synoniemen. 2-Naphthylamine, 1-nitro-; 1-Nitro-2-naphthylamine; 2-Amino-1-nitronaphthalene; 4-12-00- ... ChemNet , CAS , 606-57-5 1-nitro-2-naphthylamine. 606-57-5 1-nitro-2-naphthylamine. Naam product. ...
2-Naphthylamine and 2-Nitronaphtalene metabolism Pathway Map - PrimePCR | Life Science | Bio-Rad
Naphthylamine and 2-Nitronaphtalene metabolism Metabolism and binding studies with 2-Naphthylamine and many other arylamines ... 2-Naphthylamine and 2-Hydroxyamino-naphthalene conjugate with UDP-D-glucuronic acid and form respectively 2-Naphthylamine-N- ... In addition, both 2-Hydroxyamino-naphthalene and 2-Amino-1-Naphthol form sulphate conjugates N-Hydroxy-2-naphthyl-sulfamic acid ... 2-Nitronaphthalene is oxidized to 2-Nitronaphthalene-5,6-oxide and 2-Nitronaphthalene-7,8-oxide by following enzymes: ...
1-o-tolylazo-2-naphthylamine - albumin
68-dichloro-2-methyl-benzoebenzothiophene-4-carboxylic-acid-albumin.html. *4-5-methyl-2-phenyl-phenoxyphthalonitrile-albumin. ... 2-methylspiro56-dihydrodibenzo12-a12-ecycloheptene-111-isoindoline-albumin.html. *pyrrol21-aisoquinoline-123-tricarboxylic-acid ... Prediction result: Albumin ligand (prediction accuracy: 92.1%), binding site 2 (prediction accuracy: 80.0%). Submit ... Prediction : 1-o-tolylazo-2-naphthylamine - albumin. Your feedback has been submited, thank you! ...
CDC - NIOSH Pocket Guide to Chemical Hazards -
beta-Naphthylamine
N-Phenyl-1-naphthylamine CAS#: 90-30-2
N-Phenyl-1-naphthylamine(90-30-2) Density MSDS Formula Use,If You also need to N-Phenyl-1-naphthylamine(90-30-2) Other ... ChemicalBook provide Chemical industry users with N-Phenyl-1-naphthylamine(90-30-2) Boiling point Melting point, ... N-Phenyl-1-naphthylamine Basic information Product Name:. N-Phenyl-1-naphthylamine. Synonyms:. *N-Phenyl-1-naphthylaMine ... N-Phenyl-1-naphthylamine is probably combustible.. Contact allergens. Phenyl-alpha-naphthylamine is contained in some rubbers ...
2-naphthylamine 91-59-8 Precursor & Downstream Compound Dictionary
2-naphthylamine 91-59-8 Precursor and Downstream products, 2-naphthylamine Precursor products, 2-naphthylamine Downstream ... Current Page: Home › Chemical Dictionary › 91-59-8 › 2-naphthylamine 91-59-8 Precursor and Products ... 86-60-2 131-27-1 81-05-0 117-62-4 540-69-2 60-80-0 7664-41-7 91-20-3 64-19-7 7664-93-9 32316-92-0 7647-01-0 64-17-5 580-13-2 71 ...
2-naphthylamine 91-59-8 MSDS, Safety Technical Specifications MSDS
2-naphthylamine 91-59-8 MSDS report, 2-naphthylamine MSDS safety technical specifications search, 2-naphthylamine safety ... ADR/RID: beta-NAPHTHYLAMINE, SOLID. IMDG: beta-NAPHTHYLAMINE, SOLID. IATA: beta-Naphthylamine, solid Transport hazard class(es) ... β-Naphthylamine. Synonyms. 2-Aminonaphthalene. Formula : C10H9N Molecular Weight : 143,19 g/mol Component Concentration 2- ... Naphthylamine. CAS-No. 91-59-8 - EC-No. 202-080-4 Index-No. 612-022-00-3 Section 4. FIRST AID MEASURES. Description of first ...
GLUTARYL-GLY-ARG-4-METHOXY-2-NAPHTHYLAMINE (03MNA050) - MP Biomedicals
ChemIDplus - 31209-75-3 - KJTTXCHPHDCOQD-UHFFFAOYSA-N - 2-Naphthylamine, 1,2,3,4-tetrahydro-2-benzyl-N,4,4-trimethyl-,...
2,3,4-tetrahydro-2-benzyl-N,4,4-trimethyl-, hydrochloride - Similar structures search, synonyms, formulas, resource links, and ... 1S/C20H25N.ClH/c1-19(2)15-20(21-3,13-16-9-5-4-6-10-16)14-17-11-7-8-12-18(17)19;/h4-12,21H,13-15H2,1-3H3;1H. Download. ... Substance Name: 2-Naphthylamine, 1,2,3,4-tetrahydro-2-benzyl-N,4,4-trimethyl-, hydrochloride. RN: 31209-75-3. InChIKey: ...
CDC - NIOSH Pocket Guide to Chemical Hazards -
N-Phenyl-β-naphthylamine
N,N-Dimethyl-«beta»-naphthylamine
China Mixed Aromatics, Mixed Aromatics Manufacturers, Suppliers | Made-in-China.com
Others | Electroluminescence | Spectrum Chemical
2-Chloro-4,6-diphenyl-1,3,5-triazine TCI-C2703 , 3842-55-5 , C15H10ClN3 , TCI America 2-Chloro-4,6-diphenyl-1,3,5-triazine ... 2,4,6-Triphenyl-1,3,5-triazine TCI-T2785 , 493-77-6 , C21H15N3 , TCI America 2,4,6-Triphenyl-1,3,5-triazine ... 2-Chlorobenzimidazole TCI-C1719 , 4857-06-1 , C7H5N2Cl , TCI America 2-Chlorobenzimidazole ... N-Benzyl-2-naphthylamine TCI-B3088 , 13672-18-9 , C17H15N , TCI America N-Benzyl-2-naphthylamine ...
Bladder cancer - Causes
- NHS.UK
CISDOC - Some aromatic amines, hydrazine and related substances, N-nitroso compounds and miscellaneous alkylating agents.
1-naphthylamine, 2-naphthylamine, 4-nitrobiphenyl, N,N-bis(2-chloroethyl)-2-naphthylamine, hydrazine, 1,1-dimethylhydrazine, 1 ... naphthylamine mustard; 1-methyl-3-nitro-1-nitrosoguanidine; N-methyl-N-nitrosourethane; streptozotocin; 1,1-dimethylhydrazine; ... 1-naphthylamine; methylenebis(2-chloroaniline); hydrazine; dibutylnitrosoamine; propane sultone; 4-nitrobiphenyl; aniline; ... literature survey; maleic acid hydrazide; 1,2-dimethylhydrazine; chloromethyl methyl ether; diethyl sulfate; propiolactone; 1,4 ...
2-Aminonaphthalene (ring-D7,98%)- CAS Number 93951-94-1
Buy 2-Aminonaphthalene (ring-D7,98%) - CAS Number 93951-94-1 from LGC Standards. Login or Register to enable purchase of any ... 1,2,3,4,6,7,8,9-Octachlorodibenzo-p-dioxin approx. 25 ng/mL in Nonane. 0.2 mL. CIL-JR-D49-25. In den Warenkorb ... 1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin approx. 25 ng/mL in Nonane. 0.2 mL. CIL-JR-D47-25. In den Warenkorb ... 1,2,3,4,6,7,9-Heptachlorodibenzo-p-dioxin approx. 25 ng/mL in Nonane. 0.2 mL. CIL-JR-D48-25. In den Warenkorb ...
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PB-22 4-hydroxyisoquinoline isomer- CAS Number null
N-Phenyl-1-naphthylamine. 10 mg. LGCFOR2549.00. Add to basket N-Phenyl-2-naphthylamine. 10 mg. LGCFOR2550.00. Add to basket ... 2-Phenylethylamine Hydrochloride (Phenethylamine Hydrochloride, PEA HCl). 10 mg. LGCFOR1275.47. Add to basket ... N-Phenyl-1-(2-phenylethyl)piperidin-4-amine. 10 mg. LGCFOR0528.04. Add to basket ... 2-Phenylethylamine Hydrochloride (Phenethylamine Hydrochloride, PEA HCl) 1.0 mg/ml in Methanol (as free base). 1 mL. ...
SEOM clinical guidelines to primary prevention of cancer (2018) | SpringerLink
Table 2 Evidence available regarding the benefit of physical activity in colorectal, breast, and endometrial cancers ... 2.Servicio de Oncología MédicaHospital, Universitario Príncipe de AsturiasMadridSpain ... The consumption of red meat was qualified as probably carcinogenic in humans (group 2) (grade 1B). ... 2-naphthylamine). Their carcinogenicity has been proven in animal experiments, whereas, in humans, the evidence is less ...
EUR-Lex - 01998L0024-20140325 - EN - EUR-Lex
2 ) OJ C 34, 2.2.1994, p. 42.. ( 3 ) Opinion of the European Parliament of 20 April 1994 (OJ C 128, 9.5.1994, p. 167), Council ... 2) CAS: Chemical Abstracts Service.. (3) Measured or calculated in relation to a reference period of eight hours, time-weighted ... 2. In the case of the occurence of an event such as is mentioned in paragraph 1, the employer shall immediately take steps to ... 2. The employer must be in possession of an assessment of the risk in accordance with Article 9 of Directive 89/391/EEC, and ...
Synthetic Peptides
Chemicalname=(R)-1,2,3,4-Tetrahydro-2-naphthylamine,(R)-1,2,3,4-Tetrahydro-2-naphthylamine,CAS=CAS=21966-60-9Molecular formula...
2,3,4-Tetrahydro-2-naphthylamine and its Impurities. Purchase (R)-1,2,3,4-Tetrahydro-2-naphthylamine online ... 2. ([13C6]Leu5)-Ghrelin (human) (H-7252.1000). 3. Lauroside D. 4. Triazolam 13C D3. 5. Icatibant impurity 1. 6. BISPHENOL AF ( ... 2-Phenoxymethanesulfonanilide. 12. Nimesulide EP Impurity A. 13. Acetone HPLC. 14. Crisaborole m-Isomer. 15. Riluzole (1604337) ... Do you want a quotation or have a question about (R)-1,2,3,4-Tetrahydro-2-naphthylamine ? We normally respond within 2 hours. ...
Aniline3
- Aniline , phenylamine or aminobenzene is an organic compound with the formula C 6 H 5 NH 2 . (bionity.com)
- Aniline reacts with carboxylic acids [2] or more readily with acyl chlorides such as acetyl chloride to give amides. (bionity.com)
- Naphthylamine is the naphthalene homologues of aniline. (chemicalland21.com)
Carcinogens2
- The first such association was observed in 1895 (Rehn 1895), and subsequent research among dyestuff workers identified the aromatic amines benzidine and 2-naphthylamine as bladder carcinogens (Case et al. (thefreedictionary.com)
- The chemicals include benzene and 2-naphthylamine , known human carcinogens, cadmium and n-nitrosodiethanolamine, which is associated with cancer in humans, and polonium-210, an element that emits alpha radiation. (thefreedictionary.com)
Benzene1
- We synthesized a new HIL and HTL materials by using phenothiazinly moiety, 1,4-diphenothiazyl-benzene [DPtzB], 3′,7′,3″,7″-tetrakis(N-phenyl-2-naphthylamine)-1,4-diphenothiazyl-benzene [PNA-DPtzB]. (ingentaconnect.com)
Compounds5
- In the latter study, the men were exposed to several compounds, which probably included N -phenyl-2-naphthylamine [ref: 1]. (inchem.org)
- Metabolism and binding studies with 2-Naphthylamine and many other arylamines have shown cytochrome P-450 catalysed N-hydroxylation to be a critical step in the activation of these compounds. (bio-rad.com)
- NHFG compounds are those that do not have any heteroatoms that can undergo hydrolysis over the pH range of 5 to 9 at 25 °C. Examples include xylenes, carboxylic acids, and polycyclic aromatic hydrocarbons (PAHs), 2. (europa.eu)
- Phenyl group substituted naphthylamines are naphthalene homologues of phenylenediamines used as parent compounds in vulcanization accelerators and in antioxidants for rubber industry. (chemicalland21.com)
- arsenic compounds[a] Auramine production Benzidine Chlornaphazine Cyclophosphamide Magenta production 2-Naphthylamine Painting Rubber. (evidence.nhs.uk)
Phenyl28
- Citation: Metabolism of N-phenyl-2-naphthylamine (PNA) after Feeding to Fischer 344 Rats. (nih.gov)
- N -Phenyl-2-naphthylamine was tested for carcinogenicity by oral administration in mice, rats, hamsters and dogs. (inchem.org)
- There is some evidence from one study of 19 human volunteers that up to 0.03% of a single 10-mg dose of N -phenyl-2-naphthylamine is converted to 2-naphthylamine. (inchem.org)
- Similarly, the urine of workers exposed to N -phenyl-2-naphthylamine was found to contain 2-naphthylamine, indicating that N -phenyl-2-naphthylamine is dephenylated in the human body [ref:1]. (inchem.org)
- No data were available on the genetic effects of N -phenyl-2-naphthylamine in humans. (inchem.org)
- N -Phenyl-2-naphthylamine is not classifiable as to its carcinogenicity to humans (Group 3) . (inchem.org)
- 5. Wang, H., Dzeng, R. & Wang, D. (1982) The carcinogenicity of N -phenyl-2-naphthylamine in ICR mice (Chin. (inchem.org)
- 7. Wang, H., Wang, D. & Dzeng, R. (1984) Carcinogenicity of N -phenyl-1-naphthylamine and N -phenyl-2-naphthylamine in mice. (inchem.org)
- 8. You, X. & Yao, Y. (1981) Experimental study of inhalation carcinogenesis of N -phenyl-2-naphthylamine aerosol on mice (Chin. (inchem.org)
- N -Phenyl-2-naphthylamine has been tested in mice by oral and single subcutaneous administration and in a small number of dogs by oral administration. (inchem.org)
- In one study, in one factory, of men with known exposure to N -phenyl-2-naphthylamine in rubber processing under controlled conditions, there was no indication of an excess incidence of bladder tumours. (inchem.org)
- In the latter study, exposure was mixed but probably included exposure to N -phenyl-2-naphthylamine for many workers. (inchem.org)
- These findings do not permit an assessment of the presence or absence of an elevated risk for cancer of the urinary bladder in persons exposed to N -phenyl-2-naphthylamine. (inchem.org)
- 6-Aminonaphthalene-1,3-disulfonic acid (CAS NO. 118-33-2) is used for dye intermediates,mainly is the intermediates to produce J acid, double-J Acid, Phenyl J acid and scarlet acid. (lookchem.com)
- N-Phenyl-1-naphthylamine neutralizes acids in exothermic reactions to form salts plus water. (chemicalbook.com)
- ACUTE/CHRONIC HAZARDS: When heated to decomposition N-Phenyl-1-naphthylamine emits toxic fumes. (chemicalbook.com)
- Flash point data for N-Phenyl-1-naphthylamine are not available. (chemicalbook.com)
- N-Phenyl-1-naphthylamine is probably combustible. (chemicalbook.com)
- Phenyl-alpha-naphthylamine is contained in some rubbers and oils as an antioxidant of the amine group. (chemicalbook.com)
- It is closely related to phenyl-beta-naphthylamine and to di-beta-naphthyl-p-phenylenediamine, but without cross-reactivity. (chemicalbook.com)
- Boiled with carbon disulfide, it gives sulfocarbanilide (diphenyl thiourea), CS(NHC 6 H 5 ) 2 , which may be decomposed into phenyl isothiocyanate , C 6 H 5 CNS, and triphenyl guanidine, C 6 H 5 N=C(NHC 6 H 5 ) 2 . (bionity.com)
- Carcinogenicity of n-phenyl-1-naphthylamine and n-phenyl-2-naphthylamine in mice. (steunmijnclub.nl)
- Occupational exposure to N-phenyl-1-naphthylamine may occur through inhalation and dermal contact with this compound at workplaces where N-phenyl-1-naphthylamine is produced or used. (steunmijnclub.nl)
- Search results for N-Phenyl-1-naphthylamine at Sigma-Aldrich. (steunmijnclub.nl)
- On offer from us is Phenyl Alpha Naphthylamine Chemical, which is used in the chemical industry as an intermediate for dyestuff and food colors.Processed under the strict supervision of our deft auditors, we have take intense care to match the purity standards of the industry. (steunmijnclub.nl)
- One German company is the sole producer of N-phenyl-1-naphthylamine within the European Union. (steunmijnclub.nl)
- N-Phenyl-1-naphthylamine was used in a method for determination of the concentration of organolithium and organomagnesium reagents. (steunmijnclub.nl)
- The Undefined Acronym /Abbreviation/Slang NPN means probe N-phenyl-1-naphthylamine. (steunmijnclub.nl)
Aromatic5
- After N-oxidation of aromatic amines such as 4-aminobiphenyl or 2-naphthylamine by CYP1A2 in the liver, O-acetylation of the resulting hydroxylamine by NAT2 can produce unstable acetoxy esters that decompose to form highly electrophilic aryl nitrenium ion species. (thefreedictionary.com)
- 2) Many of them, particularly carcinogenic aromatic amines (AA) like 2-naphthylamine and 4-aminobiphenyl and polycyclic aromatic hydrocarbons (PAHs) are combustion products not detected in vapours of e-cigarettes and only in very small amounts in aerosol of tobacco heating systems (THS). (bmj.com)
- Naphthylamine is an aromatic amine which can be obtained from nitronaphthalene (with iron and hydrochloric acid) or naphthol with sodium acetate, ammonium chloride. (chemicalland21.com)
- More speci?cally, it relates to (1) a process for the preparation of quaterm'zed heterocyclic azo dyes, (2) to a process for the deoxygenation of mon azine oxides by the action of certain metals in an inert 15 solvent, (3) to a process for the deoxygenation of mon-' azine oxides with phosphorous trichloride in halogenated aromatic solvents and (4) to certain new azo derivatives of monazine oxides. (docme.ru)
- We estimated pollution in Lake Edku and the Mediterranean Sea, El-Maadiya Region, with 3 aromatic amines (1-naphthylamine, 2-naphthylamine and benzidine) in the muscle tissue of fish. (who.int)
Amines1
- Nous avons réalisé une estimation de la pollution dans le lac Edkou et en Méditerranée (région d'El-Maadiya), sur la base de trois amines aromatiques (1-naphthylamine, 2-naphthylamine et benzidine) dans les tissus musculaires de poissons. (who.int)
Salts1
- Lithol red is an azo pigment 8 that comprises a family of sodium ( PR 49), barium ( PR 49:1), calcium ( PR 49:2), and strontium ( PR 49:3) salts of diazotised Tobias (2-naphthylamine-1-sulfonic) acid coupled with 2-naphthol. (tate.org.uk)
North America3
- N-(2-Hydroxyethyl)-α-naphthylamine (CAS 2933-59-7) Market Research Report 2018 aims at providing comprehensive data on n-(2-hydroxyethyl)-α-naphthylamine market globally and regionally (Europe, Asia, North America, Latin America etc. (marketpublishers.com)
- The North America 2-Naphthylamine-6-(N-Methyl) Sulfonamide market size is $XX million USD in 2018 with XX CAGR from 2014 to 2018, and it is expected to reach $XX million USD by the end of 2024 with a CAGR of XX% from 2019 to 2024. (24marketreports.com)
- 2-Naphthylamine-6- Sulfonamide Market is an essential reference for who looks for detailed information on North America 2-Naphthylamine-6-(N-Methyl) Sulfonamide market. (24marketreports.com)
Phenylhydrazine1
- 1) were synthesized by reacting acetophenone with 2-aminobenzoic acid 4- aminobenzoic acid 2-naphthylamine phenylhydrazine 12-ethanediamine 12- diaminobenzene and 14-diaminobenzene res pectively and characterized as reported earlier [23]. (thefreedictionary.com)
Carcinogenic4
- Nitrosamine, 2-naphthylamine , and 4-aminobiphenyl are possible carcinogenic agents found in cigarette smoke3. (thefreedictionary.com)
- 8) The substances contributing to this disease are carcinogenic AA particularly 2-naphthylamine and 4-aminobiphenyl and PAHs. (bmj.com)
- 2. Although curcumin exhibits antitumor activity, carcinogenic properties have been reported. (nii.ac.jp)
- a carcinogenic liquid, C 2 H 6 N 2 O, found in tobacco smoke and certain foods. (thefreedictionary.com)
Bladder cancer1
- In: Bryan GT, Cohen SM (eds) The pathology of bladder cancer, vol 2. (springer.com)
Substances2
- 2) The Principal Regulations, the Regulations of 2003 and these Regulations may be cited together as the European Communities (Dangerous Substances and Preparations) (Marketing and Use) Regulations 2003 to 2004. (irishstatutebook.ie)
- For example, benzepyrene, 2-naphthylamine, and 4-aminobiphenyl are metabolized by the body's P450 system to form reactive substances that can chemically interact with DNA nucleotides and cause mutations ( 9 , 10 ). (pnas.org)
Urinary bladder2
- Conzelman GM Jr, Moulton JE, Flanders LE 3rd, Springer K, Crout DW (1969) Induction of transitional cell carcinomas of the urinary bladder in monkeys fed 2- naphthylamine. (springer.com)
- Erttirk E, Cohen SM, Price JM, Bryan GT (1969) Pathogenesis, histology, and transplant ability of urinary bladder carcinomas induced in albino rats by oral administration of N-[4-(5-nitro-2furyl)-2-thiazolyl] formamide. (springer.com)
Acid11
- put sulfuric acid, sodium sulfate and 2 - naphthylamine -1,5,7 - 3-sulfonic acid in water at 110-120 °C 4h, cooling and filtering, washing in sodium sulfate solution, filtered cake obtained , which is 6-Aminonaphthalene-1,3-disulfonic acid (CAS NO. 118-33-2). (lookchem.com)
- 2-Naphthylamine and 2-Hydroxyamino-naphthalene conjugate with UDP-D-glucuronic acid and form respectively 2-Naphthylamine-N-beta-D-glucuronoside and 2-Hydroxyamino-naphthalene-N-beta-D-glucuronoside . (bio-rad.com)
- In addition, both 2-Hydroxyamino-naphthalene and 2-Amino-1-Naphthol form sulphate conjugates N-Hydroxy-2-naphthyl-sulfamic acid and 2-Amino-1-naphthylsulfate , respectively. (bio-rad.com)
- Further N-Hydroxy-2-naphthyl-sulfamic acid isomerizes into 2-Amino-1-naphthylsulfate . (bio-rad.com)
- The 1:8-naphthylamine sulphonic acid or peri-acid is not used directly as such for the preparation. (chestofbooks.com)
- If it is desired to obtain more R-acid than Schaffer acid the quantity of sulphuric acid is increased, so that finally 2:3:6-naphthol-disulphonic acid is obtained almost exclusively. (chestofbooks.com)
- Naphthylamine can be oxidized by chromic acid into naphthoquinone which is the fundamental ring structure related with vitamin K. Tetrahydronaphthylamine can be oxidized by potassium permanganate into adipic acid. (chemicalland21.com)
- Culturing under hypoxic conditions increased the half-maximal inhibitory concentration and decreased the drug's binding to almost all cell lines which was reversed by incubation of cells with 2-hydroxy palmitic acid. (mdpi.com)
- The expression of fatty acid 2-hydroxylase was strongly correlated with the efficiency of the drug and inversely correlated with the effect of hypoxia. (mdpi.com)
- Lysinibacillus sphaericus D3 cell-immobilized beads in natural gel sodium alginate decolorized the xylidine orange dye 1-(dimethylphenylazo)-2-naphthol-6-sulfonic acid sodium salt in the laboratory. (mdpi.com)
- Based on the results, the probable degradation products of xylidine orange were naphthol, naphthylamine-6-sulfonic acid, 2-6-dihydroxynaphthalene, and bis -dinaphthylether. (mdpi.com)
Naphthalene3
- 2-Hydroxyamino-naphthalene is formed in the reaction of N-oxidation catalyzed by unspecific monooxygenase [ 2 ]. (bio-rad.com)
- 2-Hydroxyamino-naphthalene can spontaneously isomerize further into the 2-Amino-1-naphthol . (bio-rad.com)
- 2-Hydroxyamino-naphthalene is formed by reduction of 2-Nitrosonaphthalene in the reaction of catalyzed by unknown oxidoreductase [ 9 ]. (bio-rad.com)
Ethylene1
- First, ethylene glycol dinitrate was used, later switched to 2,3-dimethyl-2,3-dinitrobutane (DMDNB) or p -mononitrotoluene (1-methyl-4- nitrobenzene ), which is used currently. (wikipedia.org)
Tumours4
- however, a study of rubber workers who were not exposed to 2-naphthylamine did show an increased incidence of bladder tumours. (inchem.org)
- In another experiment, two rare kidney tumours were seen in female mice [ref: 2]. (inchem.org)
- However, a broader study of rubber workers who had no exposure to 2-naphthylamine has shown an increased risk of bladder tumours. (inchem.org)
- Followed by glucuronidation and excretion of the glucuronides via the kidney, this reaction can account for the ability of 2-Naphthylamine to initiate tumours of the bladder [ 1 ]. (bio-rad.com)
Rubber1
- Naphthylamine is the starting material in the dye manufacturing and rubber industry. (chemicalland21.com)
Workers exposed1
- 1993. Decrease of CD4-positive T lymphocytes in workers exposed to benzidine and beta-naphthylamine. (cdc.gov)
Chemicals1
- 1. Protect employees from the health hazards presented by hazardous chemicals used in that particular work place and 2. (vims.edu)
IARC1
- November 2, 2009 ‐‐ IARC has updated the cancer assessments of several personal habits and household exposures that cause cancer, including tobacco, areca nut, alcohol, and household coal smoke. (wikipedia.org)
Exposure1
- This was an observational, parallel-group, multicenter study conducted in 3 countries, at 5 sites in the United Kingdom, 5 sites in Germany, and 2 sites in Switzerland, to assess the exposure of adult smokers and nonsmokers to selected cigarette smoke constituents in a real-life setting. (aacrjournals.org)
Rats1
- naphthylamine in rats after intragastric administration. (inchem.org)
Toxicology1
- Naphthylamines --Toxicology. (epa.gov)
20191
- Beginning in August 2019, the initial in-person EH&S laboratory safety training workshop has been replaced with the online course, 'Laboratory Safety Online Training (Part 1 of 2). (unr.edu)
Antioxidants1
- 2-Naphthylamine was used as an Intermediate for wide application target molecules including dyestuffs, agrochemicals, and antioxidants. (chemicalland21.com)