Rifaximin BP Impurity D ;
Rifaximin Y ;
(2S,16Z,18E,20R,21S,22R,23R,24R,25S,26R,27S,28E)-5,6,20, 21,23-
Pentahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-1,15-dioxo-1,2-dihydro-2,7-(epoxypentadeca[1,11,13]-trienoimino)[1]benzofuro[4,5-e] pyrido[1,2-a]benzimidazol-25-yl acetate ;
C43H49N3O12 ;
MW: 799.86 ;