Synonyms: 3-[[(4-methyl-1-piperazinyl)imino]methyl]-rifamycin;3-(((4-Methyl-1-piperazinyl)imino)methyl)rifamycin SV;5,6,9,17,19,21-Hexahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-8-(N-(4-methyl-1-piperazinyl)formimidoyl)-2,7-(epoxypentadeca(1,11,13)trienimino)naphtho(2,1-b)furan-1,11(2H)-dione 21-acetate;8-(4-Methylpiperazinyliminomethyl) rifamycin SV;