Synonyms: 2,7-(Epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-a]phenazine-1,15(2H)-dione,5,6,21,23,25-pentahydroxy-27-methoxy-2,4,16,20,22,24,26-heptamethyl-,25-acetate (7CI,8CI); Rifazine; 2,7-(Epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-a]phenazine,rifazine deriv.;2,7-(Epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-a]phenazine-1,15(2H)-dione,25-(acetyloxy)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,16,20,22,24,26-heptamethyl-,[2S-(2R*,16Z,18E,20R*,21R*,22S*,23S*,24S*,25R*,26S*,27R*,28E)]-; NCI 144-137;Rifamycin PH; Stereoisomer of25-(acetyloxy)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,16,20,22,24,26-heptamethyl-2,7-(epoxypentadeca[1,11,13]trienimino)benzofuro[4,5-a]phenazine-1,15(2H)-dione