*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : MS3110000 CHEMICAL NAME : Histidine, 2-fluoro-, L- CAS REGISTRY NUMBER : 50444-78-5 LAST UPDATED : 198209 DATA ITEMS CITED : 1 MOLECULAR FORMULA : C6-H8-F-N3-O2 MOLECULAR WEIGHT : 173.17 WISWESSER LINE NOTATION : T5M CNJ BF D1YZVQ COMPOUND DESCRIPTOR : Drug SYNONYMS/TRADE NAMES : * 2-Fluorohistidine * L-2-Fluorohistidine *** 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 : 250 mg/kg TOXIC EFFECTS : Behavioral - somnolence (general depressed activity) Behavioral - tremor Skin and Appendages - hair REFERENCE : RCOCB8 Research Communications in Chemical Pathology and Pharmacology. (PJD Pub. Ltd., P.O. Box 966, Westbury, NY 11590) V.1- 1970- Volume(issue)/page/year: 16,507,1977 *** END OF RECORD ***