英文别名:1,4-dideoxy-1,4-dihydro-1,4-dioxo-rifamycin;2,7-(epoxypentadeca(1,11,13)trienimino)naphtho(2,1-b)furan-1,6,9,11(2h)-tetron;4-dideoxy-1,4-dihydro-1,4-dioxo-rifamycin;RIFAMPICIN S;RIFAMYCIN S;Rifaximin EP Impurity E (Rifamycin S);2,7-(Epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-1,6,9,11(2H)-tetrone, 5,17,19,21-tetrahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-, 21-acetate (7CI,8CI);Rifamycin EP Impurity B