title: Rifamycin R, a novel metabolite from a mutant of Nocardia mediterranea.
abstract: Rifamycin R is a novel ansamycin produced by a mutant of Nocardia mediterranea; both physical and chemical data indicate that it is 30-demethyl-30-hydroxymethyl rifamycin S.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D009682:Magnetic Resonance Spectroscopy; D009154:Mutation; D009615:Nocardia / Q000378:metabolism*; D012294:Rifamycins / Q000096:biosynthesis / Q000302:isolation & purification*; D013055:Spectrophotometry, Infrared
chemical_list: D012294:Rifamycins