the bactericidal activity against mycobacterium leprae of six 3- ( 4-methylpiperazin-1-yl-iminomethyl ) rifamycin sv ( rifampicin ) derivatives was compared with that of rifampicin in a modified proportional bactericidal test , using a smaller number of experimental animals and allowing the administration of a single dose of the drugs .
C0035609
rifamycin sv
C0035608
rifampicin