*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : KD1920970 CHEMICAL NAME : 2,7-(Epoxypentadeca(1,11,13)trienimino)naphtho(2,1-b) furan-1,11(2H)-dione, 5,6,9,17,19,21- hexahydroxy-2,4,12,16,18,20,22-heptamethyl-23-methoxy -8-(N-(1-pyrrolidinyl )formimidoyl)-, 21-acetate LAST UPDATED : 199406 DATA ITEMS CITED : 1 MOLECULAR FORMULA : C42-H55-N3-O12 MOLECULAR WEIGHT : 794.00 SYNONYMS/TRADE NAMES : * Rifamycin AF/apr * Rifamycin SV, 3-((1-pyrrolidinylimino)methyl)- *** HEALTH HAZARD DATA *** ** ACUTE TOXICITY DATA ** TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : >2 gm/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : 38KLAC "Structure-Activity Relationship among the Semisynthetic Antibiotics," Perlman, D., ed., New York, Academic Press, 1977 Volume(issue)/page/year: -,531,1977 *** END OF RECORD ***