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 (năf′thôl′, -thōl′, -thŏl′, năp′-) also naph·tol (-tôl, -tōl, -tŏl)
A hydroxy derivative of naphthalene, C10H8O, occurring in two isomeric forms: alpha-naphthol, used in making dyes and perfumes, and beta-naphthol, used in making antioxidants, pigments, dyes, and pharmaceuticals.


(ˈnæfθɒl; ˈnæp-)
(Chemistry) a white crystalline solid having two isomeric forms, alpha-naphthol, used in dyes, and beta-naphthol, used in dyes and as an antioxidant. Formula: C10H7OH
[C19: from naphtha + -ol1]


(ˈnæf θɔl, -θɒl, ˈnæp-)

either of two isomeric hydroxyl derivatives, C10H7OH, of naphthalene: used chiefly in dyes, drugs, perfumes, and insecticides.
[1840–50; napth(a) + -ol1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.naphthol - either of two phenols derived from naphthalene
alpha-naphthol - an isomer of naphthol used in dyes
beta-naphthol - an isomer of naphthol used in rubber as an antioxidant
phenol - any of a class of weakly acidic organic compounds; molecule contains one or more hydroxyl groups
References in periodicals archive ?
The retention times (RT) obtained for the control red dye 40, standard 1-naphthol, standard aniline and the studied samples are shown in tables 1 and 2.
Epigallocatechin gallate (EGCG) inhibits the sulfation of 1-naphthol in a human colon carcinoma cell line, Caco-2.
Algal oxidation of aromatic hydrocarbons: formation of 1-naphthol from naphthalene by Agmenellum quadruplicatum, strain PR-6.
2008) showed that 1-naphthol and 2-naphthol may act as thyroid hormone receptor antagonists.
Kuo, "Simultaneous quantitative determination of resorcinol and 1-naphthol in haircolor products by high-performance liquid chromatography," Chromatographia, vol.
P-Nitroanisol (BODI), Fast blue B salt (Urchem) 1-Naphthol (Kermel), L-Glutathione reduced (Wolsen), 1-Naphthyl acetate (SCR), Sodium darbital (ZIBO) 1-Chloro-2,4-dinitrobenzene (ABCR), p-NPP (Amresco), NADPH (Wolsen).
The kinetics of coprinus cinereus peroxidase-catalyzed 1-naphthol, 2-naphthol and p-phenylphenol oxidation was investigated.
Phenol, 1-naphthol, and 4-phenylphenol (SRL, India), chloroform, methanol, tetrahydrofuran (THE), dimethylformamide, diethyl ether, acetone, benzene, toluene, triethylamine, phosphor usoxychloride (SD Fine, India) were purified and dried by the usual procedure before use (37, 38).
Burgos WD, Pisutpaisal N, Tuntoolavest M, Chorover J, Unz RF (2000) Biodegradation of 1-naphthol in the presence of humic acid.