*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : UQ9690000 CHEMICAL NAME : 2-Pyrazolin-5-one, 3-methyl-4-(p-tolylazo)- CAS REGISTRY NUMBER : 2554-35-0 LAST UPDATED : 198806 DATA ITEMS CITED : 1 MOLECULAR FORMULA : C11-H12-N4-O MOLECULAR WEIGHT : 216.27 COMPOUND DESCRIPTOR : Drug SYNONYMS/TRADE NAMES : * F 2342 * 3-Methyl-4-(p-tolylazo)-2-pyrazolin-5-one * 3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-4-((4-methylphenyl)azo)- * 4-(4'Tolyl-azo)-3-methyl-pyrazolon-(5) *** HEALTH HAZARD DATA *** ** ACUTE TOXICITY DATA ** TYPE OF TEST : LDLo - Lowest published lethal dose ROUTE OF EXPOSURE : Unreported SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 400 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : BCPCA6 Biochemical Pharmacology. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.1- 1958- Volume(issue)/page/year: 14,1325,1965 *** END OF RECORD ***