Rifabutin Quick enquiry Where to buy Suppliers range Rifabutin inhibits bacterial RNA polymerase. Group: Pharmaceutical. Alternative Names: Spiro[9,4-(epoxypentadeca[1,11,13]trienimino)-2H-furo[2',3':7,8]naphth[1,2-d]imidazole-2,4'-piperidine]-5,10,26(3H,9H)-trione, 16-(acetyloxy)-6,18,20-trihydroxy-14-methoxy-7,9,15,17,19,21,25-heptamethyl-1'-(2-methylpropyl)-, (9S,12E,14S,15R,16S,17R,18R,19R,20S,21S,22E,24Z)-; (9S,12E,14S,15R,16S,17R,18R,19R,20S,21S,22E,24Z)-16-(Acetyloxy)-6,18,20-trihydroxy-14-methoxy-7,9,15,17,19,21,25-heptamethyl-1'-(2-methylpropyl)spiro[9,4-(epoxypentadeca[1,11,13]trienimino)-2H-furo[2',3':7,8]naphth[1,2-d]imidazole-2,4'-piperidine]-5,10,26(3H,9H)-trione; Rifamycin XIV, 1',4-didehydro-1-deoxy-1,4-dihydro-5'-(2-methylpropyl)-1-oxo-; Ansamycin; Antibiotic LM 427; LM 427; Mycobutin; R 3530; Rifabutine. CAS No. 72559-06-9. Pack Sizes: 500 mg. Product ID: B0084-075984. Molecular formula: C46H62N4O11. Mole weight: 847.01. Custom synthesis is available. Send your inquiries for more information. London