| methyl sterol oxidase | <enzyme> Converts sterol 4-methyl to carboxylic acid; requires NADH or NADPH Registry number: EC 1.- Synonym: methyl sterol mixed function oxidase, 4-methyl sterol oxidase, methylsterol oxidase, 4alpha-methylsterol oxidase (26 Jun 1999) |
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| methyl sulfoxide reductase | <enzyme> Reduces methyl sulfoxide group to methyl sulfide on various xenobiotics Registry number: EC 1.8.99.- Synonym: methyl sulfoxide reductase I, methyl sulfoxide reductase II (26 Jun 1999) |
| methyl violet | Mixtures of tetra-, penta-, or pararosanilin which vary in shade of violet depending on the extent of methylation (designated R for reddish shades, B for bluish shades); the hexamethyl compound is known as crystal violet, the pentamenthyl compound as methyl violet 6B. As stains, methyl violet has many bacteriological, histological, and cytological applications. (05 Mar 2000) |
| methyl xanthine | <chemical, drug> Naturally occurring purine alkaloids such as theobromine, theophylline and caffeine (trimethyl xanthine). They inhibit cAMP phosphodiesterase and thus cause an increase in the intracellular cAMP concentration. (18 Nov 1997) |
| methyl yellow | C6H5N:NC6H4N(CH3)2;a fat-soluble yellow dye (MW 225) that has hepatic carcinogenic action in experimental animals; used as an indicator of pH (red, at pH 2.9, yellow at pH 4.0). Synonym: dimethylaminoazobenzene, methyl yellow. (05 Mar 2000) |
| methyl-CCNU | A nitrosourea antineoplastic agent resembling carmustine (BCNU) and lomustine (CCNU). Synonym: semustine. (05 Mar 2000) |
| methyl-p-hydroxyphenyllactate esterase | <enzyme> May be involved in regulation of cell growth in normal and neoplastic tissues Registry number: EC 3.1.1.- Synonym: mehpla-ase (26 Jun 1999) |
| methyl-tert-butyl ether | Used to dissolve gallbladder stones. Acronym: MTBE (05 Mar 2000) |
| methylacrylic acid | Occurs in oil from Roman camomile; used in the manufacture of methacrylate resins and plastics. Synonym: methylacrylic acid. (05 Mar 2000) |
| methylal | <chemistry> A light, volatile liquid, H2C(OCH3)2, regarded as a complex ether, and having a pleasant ethereal odour. It is obtained by the partial oxidation of methyl alcohol. Synonym: formal. Source: Websters Dictionary (01 Mar 1998) |
| methylamine | <chemistry> See Methyl amine, under Methyl. Source: Websters Dictionary (01 Mar 1998) |
| methylamine dehydrogenase | <enzyme> Forms formaldehyde and hydrogen peroxide; paracoccus denitrificans contains covalently bound pyrroloquinoline quinone as prosthetic group Registry number: EC 1.4.99.- Synonym: methylamine oxidase, quinoprotein methylamine dehydrogenase, madh, mau gene product, methylamine utilization gene product (26 Jun 1999) |
| methylamphetamine hydrochloride | D-Desoxyephedrine hydrochloride; d-N,alpha-dimethylphenethylamine hydrochloride, "speed";a sympathomimetic agent that exerts greater stimulating effects upon the central nervous system than does amphetamine; widely used by drug abusers via the oral and intravenous ("mainlining") routes; strong psychic dependence may develop. Synonym: methylamphetamine hydrochloride. (05 Mar 2000) |
| methylaspartate mutase | <enzyme> Composed of 2 readily separable subunits mute and muts; see records for component e, glutamate mutase (mute) and component s, glutamate mutase (muts) Registry number: EC 5.4.99.1 Synonym: glutamate mutase (26 Jun 1999) |
| methylate | 1. To add methyl alcohol to ethanol to render it undrinkable. 2. To replace an atom, usually a hydrogen, with a methyl group. (09 Oct 1997) |