Synonyms: Rifamycin B trimethylhydrazide;NSC 144132;BRN 5418455;NCI 144-132;4-O-(2-Oxo-2-(trimethylhydrazino)ethyl)rifamycin;17607-46-4;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)-,trimethylhydrazide, 21-acetate;Rifamycin, 4-O-(2-oxo-2-(trimethylhydrazino)ethyl)-;Rifamycin, 4-O-[2-oxo-2-(trimethylhydrazino)ethyl]-;Rifamycin B, 1,2,2-trimethylhydrazide;LS-11775;Rifamycin, 4-O-(2-oxo-2-(trimethylhydrazino)ethyl)- (9CI)