| naphthalize | <chemistry> To mingle, saturate, or impregnate, with naphtha. Source: Websters Dictionary (01 Mar 1998) |
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| naphthazarin | <chemistry> A dyestuff, resembling alizarin, obtained from naphthoquinone as a red crystalline substance with a bright green, metallic luster. Synonym: naphthalizarin. Origin: Naphthalene + alizarin. Source: Websters Dictionary (01 Mar 1998) |
| naphthazoline hydrochloride | 2-(1-naphthylmethyl)-2-imidazoline hydrochloride;a sympathomimetic amine, used as a topical vasoconstrictor; available as naphazoline hydrochloride nitrate, with the same uses. Synonym: naphthazoline hydrochloride. (05 Mar 2000) |
| naphthene | <chemistry> A peculiar hydrocarbon occuring as an ingredient of Caucasian petroleum. Source: Websters Dictionary (01 Mar 1998) |
| naphthide | <chemistry> A compound of naphthalene or its radical with a metallic element; as, mercuric naphthide. Source: Websters Dictionary (01 Mar 1998) |
| naphthoate synthetase | <enzyme> Intermediate in bacterial conversion of o-succinylbenzoic acid to menaquinones requires CoA and ATP Chemical name: 1,4-dihydroxy-2-naphthoate synthetase Registry number: EC 4.2.1.- Synonym: 1,4-dihydroxy-2-naphthoate synthase, dhna synthase (26 Jun 1999) |
| naphthoic | <chemistry> Pertaining to, derived from, or related to, naphthalene; used specifically to designate any one of a series of carboxyl derivatives, called naphthoic acids. Source: Websters Dictionary (01 Mar 1998) |
| naphthol | <chemistry> Any one of a series of hydroxyl derivatives of naphthalene, analogous to phenol. In general they are crystalline substances with a phenol (carbolic) odour. <chemistry> Naphthol blue, Naphthol orange, Naphthol yellow, brilliant dyestuffs produced from certain complex nitrogenous derivatives of naphthol or naphthoquinone. Origin: Naphthalene + -ol. Source: Websters Dictionary (01 Mar 1998) |
| naphthol as d esterase | <enzyme> Hydrolytic enzyme activity used as a histocytochemical test for the presence of esterases in tissue. Substrate used is 3-hydroxy-4'-nitro-2-naphthanilide chloroacetate (naphthol as-d). Registry number: EC 3.1.- (12 Dec 1998) |
| naphthol yellow S | 8-Hydroxy-5,7-dinitro-2-naphthalene sulfonic acid;an acid dye used as a stain for basic proteins in microspectro-photometry. (05 Mar 2000) |
| naphtholate | A compound of naphthol in which the hydrogen in the hydroxyl radical is substituted by a base. (05 Mar 2000) |
| naphthols | Naphthalene derivatives carrying one or more hydroxyl (-oh) groups at any ring position. They are often used in dyes and pigments, as antioxidants for rubber, fats, and oils, as insecticide, in pharmaceuticals, and in numerous other applications. (12 Dec 1998) |
| naphthoquinone | <chemistry> A yellow crystalline substance, C10H6O2, analogous to quinone, obtained by oxidizing naphthalene with chromic acid. Origin: Naphthalene + quinone. Source: Websters Dictionary (01 Mar 1998) |
| naphthoquinones | Naphthalene rings which contain two ketone moieties in any position. They can be substituted in any position except at the ketone groups. (12 Dec 1998) |
| naphthyl | <chemistry> A hydrocarbon radical regarded as the essential residue of naphthalene. Origin: Naphthalene + -yl. Source: Websters Dictionary (01 Mar 1998) |