Rifampicin inhibits bacterial DNA-dependent RNA synthesis by inhibiting bacterial DNA-dependent RNA polymerase. Rifampicin may be abbreviated R, RMP, RA, RF, or RIF (US). In 1957, a soil sample from a pine forest on the French Riviera was brought for analysis to the Lepetit Pharmaceuticals research lab in Milan, Italy. There, a research group head...
<drug> Semi synthetic member of the rifamycin group of antibiotics. ... (18 Nov 1997) ... 
(rif´am-pĭ-sin) rifampin.
Semi-synthetic member of the rifamycin group of antibiotics.