| carbamoylcarbamic acid | NH2CONHCOOH; urea carbonic acid;its amide is biuret (allophanamide). Synonym: carbamoylcarbamic acid, N-carboxyurea. (05 Mar 2000) |
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| carbamoylphosphate synthetase deficiency | <biochemistry> Carbamoylphosphate synthetase is the initial enzyme of the urea cycle, catalysing the synthesis of carbamoylphosphate from ammonia, bicarbonate and ATP as the first step of ammonia detoxification. The enzyme is an intramitochondrial form called CPS I. A different isozyme found in the cytoplasm, called CPS II, is much less active and apparently not involved in the urea cycle. The deficiency state is autosomal recessive and presents in infancy with massive hyperammonaemia and neurologic deficits in survivors. Diagnosis is suggested by the blood biochemistry and confirmed by specific enzyme assay on liver or rectal biopsy. Prenatal diagnosis by molecular methods has been used successfully in informative families. Inheritance: autosomal recessive. (07 Apr 1998) |
| carbamoyltransferase | Enzymes transferring carbamoyl groups from one compound to another (e.g., aspartate carbamoyltransferase, ornithine carbamoyltransferase). Synonym: transcarbamoylase. (05 Mar 2000) |
| carbamoylurea | <chemistry> A white, crystalline, nitrogenous substance, C2O2N3H5, formed by heating urea. It is intermediate between urea and cyanuric acid. Origin: Pref. Bi- + urea. Source: Websters Dictionary (01 Mar 1998) |
| carbamyl | Former spelling of carbamoyl. (05 Mar 2000) |
| carbamyl phosphate | <chemical> Phosphate salt of carbamic acid. Chemical name: Carbamic acid, monoanhydride with phosphoric acid (12 Dec 1998) |
| carbamylation | Former spelling of carbamoylation. (05 Mar 2000) |
| carbamylcholine chloride | A cholinomimetic drug which reacts with and activates both muscarinic and nicotinic receptors. It is slowly hydrolyzed and thus its effects far outlast those of acetylcholine. Used medically to stimulate smooth muscle, as in paralytic ileus following surgery. (05 Mar 2000) |
| carbanion | <chemistry> A negatively charged carbon atom. (07 Apr 1998) |
| carbapenems | A group of beta-lactam antibiotics in which the sulfur atom in the thiazolidine ring of the penicillin molecule is replaced by a carbon atom. Thienamycins are a subgroup of carbapenems which have a sulfur atom as the first constituent of the side chain. (12 Dec 1998) |
| carbaril | Synonym: carbamate. (05 Mar 2000) |
| carbarsone | 4-Ureidobenzenearsonic acid; N-carbamoylarsanilic acid;an amoebicide. (05 Mar 2000) |
| carbaryl | <chemical> A carbamate insecticide and parasiticide. It is a potent anticholinesterase agent belonging to the carbamate group of reversible cholinesterase inhibitor. It has a particularly low toxicity from dermal absorption and is used for control of head lice in some countries. Pharmacological action: cholinesterase inhibitor, insecticide, carbamate. Chemical name: 1-Naphthalenol, methylcarbamate (12 Dec 1998) |
| carbazides | 1,3-diaminoureas; rNH-NHCONH-NHR'. Synonym: carbohydrazides. (05 Mar 2000) |
| carbazilquinone | <chemical> An alkylating agent structurally similar to mitomycin c and found to be effective in the treatment of leukaemia and various other neoplasms in mice. It causes leukaemia and thrombocytopenia in almost all human patients. Pharmacological action: antineoplastic agent, alkylating. Chemical name: 2,5-Cyclohexadiene-1,4-dione, 2-(2-((aminocarbonyl)oxy)-1-methoxyethyl)-3,6-bis(1-aziridinyl)-5-methyl- (12 Dec 1998) |