*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : TH8850000 CHEMICAL NAME : Phthalazine, 1,4-dihydrazino-, hydrochloride CAS REGISTRY NUMBER : 63868-75-7 LAST UPDATED : 199012 DATA ITEMS CITED : 4 MOLECULAR FORMULA : C8-H10-N6.Cl-H MOLECULAR WEIGHT : 226.70 WISWESSER LINE NOTATION : T66 CNNJ BMZ EMZ &GH COMPOUND DESCRIPTOR : Drug SYNONYMS/TRADE NAMES : * C-7441 * Dihydralazine hydrochloride * 1,4-Dihydrazinophthalazine hydrochloride *** HEALTH HAZARD DATA *** ** ACUTE TOXICITY DATA ** TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 350 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : RPOBAR Research Progress in Organic-Biological and Medicinal Chemistry. (New York, NY) V.1-3, 1964-72. Discontinued. Volume(issue)/page/year: 2,283,1970 TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intraperitoneal SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 270 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : RPOBAR Research Progress in Organic-Biological and Medicinal Chemistry. (New York, NY) V.1-3, 1964-72. Discontinued. Volume(issue)/page/year: 2,283,1970 TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intravenous SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 167 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : RPOBAR Research Progress in Organic-Biological and Medicinal Chemistry. (New York, NY) V.1-3, 1964-72. Discontinued. Volume(issue)/page/year: 2,283,1970 TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intraperitoneal SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 290 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : JPETAB Journal of Pharmacology and Experimental Therapeutics. (Williams & Wilkins Co., 428 E. Preston St., Baltimore, MD 21202) V.1- 1909/10- Volume(issue)/page/year: 101,368,1951 *** END OF RECORD ***