*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : UR0411600 CHEMICAL NAME : 3H-Pyrazol-3-one, 1,2-dihydro-4-butyl-5-((4-nitrobenzoyl)oxy)-1,2-diphe nyl- CAS REGISTRY NUMBER : 58906-06-2 BEILSTEIN REFERENCE NO. : 0730639 REFERENCE : 5-25-01-00044 (Beilstein Handbook Reference) LAST UPDATED : 199612 DATA ITEMS CITED : 1 MOLECULAR FORMULA : C26-H23-N3-O5 MOLECULAR WEIGHT : 457.52 COMPOUND DESCRIPTOR : Drug SYNONYMS/TRADE NAMES : * 4-Butyl-5-((4-nitrobenzoyl)oxy)-1,2-diphenyl-1,2-dihydro-3H-pyrazol-3-one * 3-(p.Nitrobenzoil)fenibutazone * 3-(p-Nitrobenzoyl)phenylbutazone *** HEALTH HAZARD DATA *** ** ACUTE TOXICITY DATA ** TYPE OF TEST : LD - Lethal dose ROUTE OF EXPOSURE : Intraperitoneal SPECIES OBSERVED : Rodent - rat DOSE/DURATION : >576 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : BCFAAI Bollettino Chimico Farmaceutico. (Societa Editoriale Farmaceutica, Via Ausonio 12, 20123 Milan, Italy) V.33- 1894- Volume(issue)/page/year: 117,90,1978 *** END OF RECORD ***