rifamycin-S, Rifamycin,4-O-(2-oxo-2-(tripropylhydrazino)ethyl), 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)-,21-acetate,1,2,2-tripropylhydrazide, (12S,3E,5S,13E,15Z)-7t-acetoxy-15,6,9,9c,11t-pentahydroxy-5r-methoxy-12,4,6t,8c,10c,12t,16-heptamethyl-2-oxa-18-aza-1(2,7)-naphtho[2,1-b]furana-cyclooctadecaphane-3,13,15-triene-11,17-dione, O4-(tripropylhydrazinocarbonyl-methyl)-rifamycin, Rifamycin-B-tripropyl-hydrazid, RIFAMYCIN SV, rifamycin-B tripropylhydrazide