its in vitro activity was similar to that of erythromycin and slightly greater than that of roxithromycin , with beta-hemolytic streptococci and streptococcus pneumoniae inhibited by less than 2 micrograms of a-56268 per ml ( 50 % inhibited by 0.06 microgram/ml ) .
C0014806
erythromycin
C0035891
roxithromycin