| benzene mono-oxygenase | <enzyme> Cytochrome p-450-dependent; forms benzene oxide Registry number: EC 1.13.12.- (26 Jun 1999) |
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| benzene nucleus | The six conjugated carbon atoms of the benzene ring. (05 Mar 2000) |
| benzene ring | The closed-chain arrangement of the carbon and hydrogen atoms in the benzene molecule. See: cyclic compound. (05 Mar 2000) |
| benzeneamine | <chemistry> An organic base belonging to the phenylamines. It may be regarded as ammonia in which one hydrogen atom has been replaced by the radical phenyl. It is a colourless, oily liquid, originally obtained from indigo by distillation, but now largely manufactured from coal tar or nitrobenzene as a base from which many brilliant dyes are made. See: Anil. Source: Websters Dictionary (01 Mar 1998) |
| benzenesulfonates | Organic salts and esters of benzenesulfonic acid. (12 Dec 1998) |
| benzestrol | 3-Ethyl-2,4-bis(p-hydroxyphenyl)acetate;a synthetic oestrogenic substance. (05 Mar 2000) |
| benzethonium | <chemical> Bactericidal cationic quaternary ammonium surfactant used as a topical anti-infective agent. It is an ingredient in medicaments, deodorants, mouthwashes, etc., and is used to disinfect apparatus, etc., in the food processing and pharmaceutical industries, in surgery, and also as a preservative. The compound is toxic orally as a result of neuromuscular blockade. Pharmacological action: anti-infective agents, local. Chemical name: Benzenemethanaminium, N,N-dimethyl-N-(2-(2-(4-(1,1,3,3-tetramethylbutyl)phenoxy)ethoxy)ethyl)-, chloride (12 Dec 1998) |
| benzethonium chloride | A synthetic quaternary ammonium compound, one of the cationic class of detergents; germicidal and bacteriostatic. (05 Mar 2000) |
| benzhydryl compounds | Compounds which contain the methyl radical substituted with two benzene rings. Permitted are any substituents, but ring fusion to any of the benzene rings is not allowed. (12 Dec 1998) |
| benzidine | NH2C6H4C6 H4NH2; p-Diaminodiphenyl;a colourless, crystalline compound used to detect sulfates in water analysis, for the identification of blood, and as a reagent in special stains; because it has been identified as a carcinogen, its current use is limited. (05 Mar 2000) |
| benzidine test | A test for blood; the suspected fluid is treated with glacial acetic acid and ether, and the latter is then decanted and treated with hydrogen peroxide and a solution of benzidine in acetic acid; the presence of blood is indicated by a bluish colour turning to purple. Synonym: Adler's test. (05 Mar 2000) |
| benzidines | <chemical> Very toxic industrial chemicals. They are absorbed through the skin, causing lethal blood, bladder, liver, and kidney damage and are potent, broad-spectrum carcinogens in most species. Pharmacological action: carcinogens. (12 Dec 1998) |
| benzile | <chemistry> A yellowish crystalline substance, formed from benzoin by the action of oxidizing agents, and consisting of a doubled benzoyl radical. Structure: C6H5.CO.CO.C6H5 Origin: From Benzoin. (06 Aug 1998) |
| benzimidazole | A ring system comprised of a benzene ring fused with an imidazole ring; occurs in nature as part of the vitamin B12 molecule. (05 Mar 2000) |
| benzin | petroleum benzin |