*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : MT0175000 CHEMICAL NAME : DL-Homocysteine CAS REGISTRY NUMBER : 454-29-5 BEILSTEIN REFERENCE NO. : 5493225 LAST UPDATED : 199709 DATA ITEMS CITED : 3 MOLECULAR FORMULA : C4-H9-N-O2-S MOLECULAR WEIGHT : 135.20 COMPOUND DESCRIPTOR : Mutagen SYNONYMS/TRADE NAMES : * DL-2-Amino-4-mercaptobutyric acid * Butyric acid, 2-amino-4-mercapto-, DL- * (+-)-Homocysteine * USAF B-12 *** HEALTH HAZARD DATA *** ** ACUTE TOXICITY DATA ** TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intraperitoneal SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 500 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: AD277-689 TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intravenous SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 770 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : YKKZAJ Yakugaku Zasshi. Journal of Pharmacy. (Nippon Yakugakkai, 2-12-15 Shibuya, Shibuya-ku, Tokyo 150, Japan) No.1- 1881- Volume(issue)/page/year: 89,1138,1969 ** MUTATION DATA ** TYPE OF TEST : Phage inhibition capacity TEST SYSTEM : Bacteria - Escherichia coli DOSE/DURATION : 125 mg/L REFERENCE : APMBAY Applied Microbiology. (Washington, DC) V.1-30, 1953-75. For publisher information, see AEMIDF. Volume(issue)/page/year: 12,234,1964 *** END OF RECORD ***