*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : UR0700000 CHEMICAL NAME : 1H,5H-Pyrazolo(1,2-a)pyrazol-1-one, 6,7-dihydro-3-ethyl-2-methyl- CAS REGISTRY NUMBER : 51938-05-7 BEILSTEIN REFERENCE NO. : 0641611 REFERENCE : 5-24-02-00201 (Beilstein Handbook Reference) LAST UPDATED : 199612 DATA ITEMS CITED : 1 MOLECULAR FORMULA : C9-H14-N2-O MOLECULAR WEIGHT : 166.25 COMPOUND DESCRIPTOR : Drug SYNONYMS/TRADE NAMES : * 6,7-Dihydro-3-ethyl-2-methyl-1H,5H-pyrazolo(1,2-a)pyrazol-1-one * 1,2-Trimethylene-3-ethyl-4-methylpyrazolone-5 *** 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 : 521 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : EJPSBZ Egyptian Journal of Pharmaceutical Sciences. (National Information and Documentation Centre, Al-Tahrir St., Awqaf P.O. Dokki Cairo, Egypt) V.13- 1972- Volume(issue)/page/year: 14,31,1973 *** END OF RECORD ***