| thioalcohol | <chemistry> Any one of series of compounds, hydrosulphides of alcohol radicals, in composition resembling the alcohols, but containing sulphur in place of oxygen, and hence called also the sulphur alcohols. In general, they are colourless liquids having a strong, repulsive, garlic odour. The name is specifically applied to ethyl mercaptan, C2H5SH. So called from its avidity for mercury, and other metals. Origin: F, fr. NL. Mercurius mercury + L. Captans, p. Pr. Of captare to seize, v. Intens. Fr. Capere. Source: Websters Dictionary (01 Mar 1998) |
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| thioamide | An amide in which S replaces O. (05 Mar 2000) |
| thioamides | Organic compounds containing the radical -csnh2. (12 Dec 1998) |
| thioate | A salt or ester of a -thioic acid. (05 Mar 2000) |
| thiobacillus | A genus of gram-negative, rod-shaped bacteria that derives energy from the oxidation of one or more reduced sulfur compounds. Its organisms are widely distributed in marine, freshwater, and soil environments, especially where oxidizable sulfur is abundant. (12 Dec 1998) |
| thiobacillus thiooxidans | A strictly autotrophic bacterium that oxidises sulfur and thiosulfate to sulfuric acid. (12 Dec 1998) |
| thiobarbiturates | Compounds in which one or more of the ketone groups on the pyrimidine ring of barbituric acid are replaced by thione groups. (12 Dec 1998) |
| thiobarbituric acid reactive substances | Low-molecular-weight end products, probably malondialdehyde, that are formed during the decomposition of lipid peroxidation products. These compounds react with thiobarbituric acid to form a fluorescent red adduct. (12 Dec 1998) |
| thiocarbamates | Carbamates in which the -co- group has been replaced by a -cs- group. (12 Dec 1998) |
| thiocarbamide | <chemical> A photographic fixative used also in the manufacture of resins. According to the fourth annual report on carcinogens (ntp 85-002, 1985), this substance may reasonably be anticipated to be a carcinogen (merck index, 9th ed). Many of its derivatives are antithryoid agents and/or free radical scavengers. Pharmacological action: antithyroid agents, carcinogens, free radical scavengers, indicators and reagents. Chemical name: Thiourea (12 Dec 1998) |
| thiocarbonate | <chemistry> A sulphocarbonate. Source: Websters Dictionary (01 Mar 1998) |
| thiocarbonic | <chemistry> Same as Sulphocarbonic. Origin: Thio- + carbonic. Source: Websters Dictionary (01 Mar 1998) |
| thiocarlide | 4,4'-Di(isoamyloxy)thiocarbanilide;a synthetic compound whose molecule contains the three antituberculous groups p-aminosalicylic acid, p-aminobenzaldehyde thiosaemicarbazone, and the thiocarbamide group; an antitubercular agent. (05 Mar 2000) |
| thiocholine | <chemical> (2-mercaptoethyl)trimethylammonium. A reagent for the determination of cholinesterases; acts also as a highly selective nerve stain. Pharmacological action: indicators and reagents. Chemical name: Ethanaminium, 2-mercapto-N,N,N-trimethyl- (12 Dec 1998) |
| thiochrome | A fluorescent compound, C12H14N4OS, produced by the oxidation of thiamin; used in methods for detection and determination of thiamin. (05 Mar 2000) |