Synonyms: Rifamycin B triethylhydrazide;NSC 144135;BRN 5418672;Acetic acid, ((1,2-dihydro-5,6,17,19,21-pentahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,11-dioxo-2,7-(epoxypentadeca(1,11,13)trienimino)naphtho(2,1-b)furan-9-yl)oxy)-, 21-acetate, 1,2,2-triethylhydrazide;Rifamycin, 4-O-(2-oxo-2-(triethylhydrazino)ethyl)-;38123-22-7;LS-11769;Rifamycin, 4-O-(2-oxo-2-(triethylhydrazino)ethyl)- (9CI)