| methyl methanesulfonate | <chemical> Methanesulfonic acid, methyl ester. An alkylating agent in cancer therapy that may also act as a mutagen by interfering with and causing damage to DNA. Pharmacological action: antineoplastic agent, alkylating, mutagens. Chemical name: Methanesulfonic acid, methyl ester (12 Dec 1998) |
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| methyl n-butyl ketone | <chemical> 2-hexanone. An industrial solvent which causes nervous system degeneration. Synonym: mbk. Chemical name: 2-Hexanone (12 Dec 1998) |
| methyl nicotinate | Nicotinic acid methyl ester, used as rubefacient. (05 Mar 2000) |
| methyl orange | C14H14N3O3SNa;a weakly acid dye used as a pH indicator (red at 3.2, yellow at 4.4). Synonym: helianthine. (05 Mar 2000) |
| methyl parathion | <chemical> Phosphorothioic acid, o,o-dimethyl o-(4-nitrophenyl) ester. The methyl homolog of parathion. An effective, but highly toxic, organothiophosphate insecticide and cholinesterase inhibitor. Pharmacological action: cholinesterase inhibitor, insecticide, organothiophosphate. Chemical name: Phosphorothioic acid, O,O-dimethyl O-(4-nitrophenyl) ester (12 Dec 1998) |
| 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 red | C15H15N3O2;a weakly acid dye used as a pH indicator (red at 4.8, yellow at 6.0); easily reduced with loss of colour, and pH readings must be made rapidly. (05 Mar 2000) |
| methyl salicylate | Aromatic methyl ester of salicylic acid, produced synthetically or distilled from Gaultheria procumbens (family Ericaceae) or from Betula lenta (family Betulaceae). Used as a component of liniments, used externally and internally for the treatment of various forms of rheumatismit produces heat when rubbed into the skin (counterirritant). Synonym: checkerberry oil, gaultheria oil, sweet birch oil, wintergreen oil. (05 Mar 2000) |
| 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) |
| 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-tert-butyl ether | Used to dissolve gallbladder stones. Acronym: MTBE (05 Mar 2000) |
| 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) |
| p,p'-dichlorodiphenyl methyl carbinol | A synthetic compound found effective as a miticide. Acronym: DMC (05 Mar 2000) |