| hydroxypyruvate isomerase | <enzyme> Catalyses reversibly the conversion of tartronate saemialdehyde into hydroxypyruvate Registry number: EC 5.3.1.22 (26 Jun 1999) |
|---|---|
| hydroxyquinol 1,2-dioxygenase | <enzyme> Catalyses oxidative ring fission of hydroxyquinol to yield 3-hydroxy-cis,cis-muconate; contains ferric iron; specific for hydroxyquinol Registry number: EC 1.13.11.- Synonym: 1,2,4-trihydroxybenzene 1,2-dioxygenase (26 Jun 1999) |
| hydroxyquinolines | The 8-hydroxy derivatives inhibit various enzymes and their halogenated derivatives, though neurotoxic, are used as topical anti-infective agents, among other uses. (12 Dec 1998) |
| hydroxysteroid dehydrogenases | <enzyme> Enzymes of the oxidoreductase class that catalyze the dehydrogenation of hydroxysteroids. Registry number: EC 1.1.- (12 Dec 1998) |
| hydroxysteroids | Steroids in which one or more hydroxy groups have been substituted for hydrogen atoms either within the ring skeleton or on any of the side chains. (12 Dec 1998) |
| hydroxystilbamidine isethionate | 2-Hydroxy-4,4'-stilbenedicarboxamidine di-beta-hydroxyethanesulfonate;an antifungal and antiprotozoan agent used in the treatment of the nonprogressive cutaneous form of blastomycosis. (05 Mar 2000) |
| hydroxytestosterones | 17 beta-hydroxy-4-androsten-3-ones. Testosterone derivatives formed by the substitution of one or more hydroxyl groups in any position. (12 Dec 1998) |
| hydroxytoluic acid | C6H5CHOHCOOH;a urinary antibacterial agent (both bactericidal and bacteriostatic). Synonym: hydroxytoluic acid, phenylglycolic acid. Origin: Ger. Mandel, almond (05 Mar 2000) |
| hydroxytryptophan decarboxylase | <enzyme> An enzyme that catalyses the decarboxylation of l-dopa to dopamine, of l-tryptophan to tryptamine, and of l-hydroxytryptophan to serotonin; important in the biosynthetic pathway of catecholamines and melanin. Synonym: dopa decarboxylase, hydroxytryptophan decarboxylase, tryptophan decarboxylase. (05 Mar 2000) |
| hydroxytryptophol | <chemical> 5-hydroxy-indole-3-ethanol. Chemical name: 1H-Indole-3-ethanol, 5-hydroxy- (12 Dec 1998) |
| hydroxyurea | Inhibitor of DNA synthesis (but not repair). (18 Nov 1997) |
| hydroxyzine | <chemical> A histamine h1 receptor antagonist that is effective in the treatment of chronic urticaria, dermatitis, and histamine-mediated pruritus. Unlike its major metabolite cetirizine, it does cause drowsiness. It is also effective as an antiemetic, for relief of anxiety and tension, and as a sedative. Pharmacological action: anti-anxiety agents, antiemetics, antipruritics, histamine h1 antagonists, sedatives, nonbarbiturate. Chemical name: Ethanol, 2-(2-(4-((4-chlorophenyl)phenylmethyl)-1-piperazinyl)ethoxy)- (12 Dec 1998) |