| chloroacetic acid | An acetic acid in which one or more of the hydrogen atoms are replaced by chlorine. According to the number of atoms so displaced the acid is called monochloroacetic (chloroacetic; ClCH2COOH), dichloroacetic (Cl2CHCOOH), or trichloroacetic (Cl3CCOOH). Synonym: chloracetic acid. (05 Mar 2000) |
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| chloroacetophenone | C6H5COCH2Cl;a lacrimatory gas; used in training and in riot control. (05 Mar 2000) |
| chloroambucil | <drug, oncology> Chlorambucil is a bifunctional alkylating agent of the nitrogen mustard type that has been found active against selected human neoplastic diseases. Side effects: Low blood counts (suppressed bone marrow function) and chance of leukaemia and infertility, convulsions. (05 Jan 1998) |
| chloroanaemia | Yellowing or bleaching of plant tissues due to the loss of chlorophyll or failure of chlorophyll synthesis. Symptomatic of many plant diseases, also of deficiencies of light or certain nutrients. (18 Nov 1997) |
| chloroazodin | A,a'-Azo-bis(chloroformamidine);a bactericidal agent used as a surgical antiseptic. (05 Mar 2000) |
| chlorobenzene dehydrogenase | <enzyme> Converts product of chlorobenzene dioxygenase to chlorocatechol Registry number: EC 1.3.- Synonym: chlorobenzene dihydrodiol dehydrogenase (26 Jun 1999) |
| chlorobenzene dioxygenase | <enzyme> With chlorobenzene dioxygenase catalyses chlorobenzenes to chlorocatechols Registry number: EC 1.13.99.- (26 Jun 1999) |
| chlorobenzoates | Benzoic acid or benzoic acid esters substituted with one or more chlorine atoms. (12 Dec 1998) |
| chlorobutanol | <chemical> A colourless to white crystalline compound with a camphoraceous odour and taste. It is a widely used preservative in various pharmaceutical solutions, especially injectables. Also, it is an active ingredient in certain oral sedatives and topical anaesthetics. Pharmacological action: preservatives, pharmaceutical, sedatives, nonbarbiturate. Chemical name: 2-Propanol, 1,1,1-trichloro-2-methyl- (12 Dec 1998) |
| chlorocatechol 1,2-dioxygenase | <enzyme> Forms 2,4-dichloromuconate Registry number: EC 1.13.11.- (26 Jun 1999) |
| chlorocresol | P-Chloro-m-cresol;used as an antiseptic and disinfectant; it is more active in acid than in alkaline solutions. (05 Mar 2000) |
| chlorocruorin | A greenish haemoglobin-like pigment found in certain worms; contains a porphyrin differing from protoporphyrin by a formyl group in place of the 2-vinyl group. (05 Mar 2000) |
| chloroethane | <chemical> A gas that condenses under slight pressure. Because of its low boiling point ethyl chloride sprayed on skin produces an intense cold by evaporation. Cold blocks nerve conduction. Ethyl chloride has been used in surgery but is primarily used to relieve local pain in sports medicine. Pharmacological action: anaesthetics, local. Chemical name: Ethane, chloro- (12 Dec 1998) |
| chloroethylene | <chemical> A gas that has been used as an aerosol propellant and is the starting material for polyvinyl resins. Toxicity studies have shown various adverse effects, particularly the occurrence of liver neoplasms. Pharmacological action: carcinogens. Chemical name: Ethene, chloro- (12 Dec 1998) |
| chlorofluorocarbon | A family of chemicals composed primarily of carbon, hydrogen, chlorine, and fluorine. Used principally as refrigerants and industrial cleansers. Chlorofluorocarbons have the tendency to destroy the Earth's protective ozone layer. (05 Dec 1998) |