Naphthol yellow S is an organic compound that is a dye. It is a derivative of 1-naphthol. At one time it was a popular food colorant but it was delisted...

2-Naphthol, or β-naphthol, is a fluorescent colorless (or occasionally yellow) crystalline solid with the formula C10H7OH. It is an isomer of 1-naphthol...

1-Naphthol, or α-naphthol, is a organic compound with the formula C10H7OH. It is a fluorescent white solid. 1-Naphthol differs from its isomer 2-naphthol...

Acid yellow may refer to: Naphthol yellow S (acid yellow 1) Yellow 2G (acid yellow 17) Metanil yellow (acid yellow 36) Martius yellow (acid yellow 24)...

agent), serves as a nucleophile. Classical coupling agents are phenols and naphthols. Usually the diazonium reagent attacks at the para position of the coupling...

Sunset yellow FCF (also known as orange yellow S, or C.I. 15985) is a petroleum-derived orange azo dye with a pH-dependent maximum absorption at about...

known as alpha-naphthol orange, is an azo dye formerly used as a food dye. It is the disodium salt of 1-(m-sulfophenylazo)-2-naphthol-6-sulfonic acid...

P-32-postlabelling analysis of DNA adducts with 1-(phenylazo)-2-naphthol (Sudan I, Solvent Yellow 14) formed in vivo in Fisher 344 rats. Collection of Czechoslovak...

2-Naphthol β-naphthol Azoic coupling component 1 37500 diazonium salt 135-19-3 Naphthol green B Acid green 1 10020 nitroso 19381-50-1 Naphthol yellow S...

acetoin in a bacterial broth culture. The test is performed by adding alpha-naphthol and potassium hydroxide to the Voges-Proskauer broth, which is a glucose-phosphate...

condensation of corresponding 5-(dialkylamino)-2-nitrosophenols with 2-naphthol. The yields are generally moderate as no co-oxidant is used in this procedure...

useful. Naphthalenesulfonic acids are used in the synthesis of 1-naphthol and 2-naphthol, precursors for various dyestuffs, pigments, rubber processing...

hybridization). Hydrogenation of arenes create saturated rings. The compound 1-naphthol is completely reduced to a mixture of decalin-ol isomers. The compound...

indigotine (FD&C Blue No. 2), light green SF (FD&C Green No. 2), naphthol yellow 1 (FD&C Yellow No. 1), and orange 1 (FD&C Orange No. 1). Even with updated...

the combination of 2,5-diaminotoluene with the coupler 1-naphthol gives a purple dye. Yellow-green couplers include resorcinol, 4-chlororesorcinol, and...

remaining yellow (pH = 6.2 or above) indicates a negative test, meaning the butanediol fermentation is used. The VP test uses alpha-naphthol and potassium...

Mattay, Jochen; Oelgemöller, Michael (2006). "Photooxygenations of 1-naphthols: An environmentally friendly access to 1,4-naphthoquinones". Tetrahedron...

of six food dyes (tartrazine, Allura red, Ponceau 4R, Quinoline Yellow, sunset yellow, carmoisine (dubbed the "Southampton 6")), and sodium benzoate (a...

Journal of Industrial Science. Retrieved on 2007-09-24. Auerbach G, "Azo and naphthol dyes", Textile Colorist, 1880 May;2(17):137-9, p 138. Wilcox RW, "The treatment...

species, R. fragilis, has notched gills, and its stem stains blue with naphthol. The uncommon European subspecies R. emetica longipes is distinguished...

Allura Red, Ponceau 4R, Quinoline Yellow, Sunset Yellow and Carmoisine in food and beverages] Tomaska LD and Brooke-Taylor, S. Food Additives - General pp...

dyes sold in the market fell into the class of azo dyes. 1885, an azo-naphthol, Para-red, became the first water-insoluble organic pigment not containing...

activity and its Lewis acidity. For example, iron(III) chloride oxidizes naphthols to naphthoquinones: 3-Alkylthiophenes are polymerized to polythiophenes...

ortho-quinones or by the oxidation of an ortho-diamine in the presence of α-naphthol, and by the decomposition of ortho-anilido-(-toluidido- et cetera)- azo...

extended conjugation. A popular azo dye is aniline yellow, produced from aniline. Naphthalen-2-ol (beta-naphthol) gives an intensely orange-red dye. Methyl orange...

fluorescence depending on how it is made. When freshly made, the creosote is a yellow oil with a greenish cast and highly fluorescent, and the fluorescence is...

fission, particularly if the bond is electron-poor. Nitrosophenols and naphthols isomerize to the oxime quinone in solution, but reversibly; nitrosophenol...

cells and acts as an inhibitor for several dehydrogenase enzymes. It is a yellow pigment. The structure exhibits atropisomerism, with the two enantiomers...

hemolytic anemia, and cytotoxicity in liver cells. 4-amino-2-methyl-1-naphthol ("K5") is not natural and hence not a "vitamin". Research with "K5" suggests...

to carbon black, azo dyes, and acridine, quinoline, phthalocyanine and naphthol derivatives, dyes made from ash, and other mixtures. Iron oxide pigments...