*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : KE7283000 CHEMICAL NAME : Ergosta-2,24-dien-26-oic acid, 5,6-epoxy-4,14,17,20,22-pentahydroxy-1-oxo-, delta-lactone, (4-beta,5-beta,6-beta,17-alpha,22R)- CAS REGISTRY NUMBER : 54334-04-2 LAST UPDATED : 198605 DATA ITEMS CITED : 1 MOLECULAR FORMULA : C28-H38-O8 MOLECULAR WEIGHT : 502.66 SYNONYMS/TRADE NAMES : * 5,6-Epoxy-4,14,17,20,22-pentahydroxy-1-oxoergosta-2,24-dien-26-oic acid delta-lactone * 4-beta-Hydroxywithanolide E * NSC 212509 * Withanolide E, 4-beta-hydroxy- *** 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 : 31050 ug/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : NCISP* National Cancer Institute Screening Program Data Summary, Developmental Therapeutics Program. (Bethesda, MD 20205) Volume(issue)/page/year: JAN1986 *** END OF RECORD ***