Synonyms: BacitracinF,1-[N-[[2-(1-amino-2-methylbutyl)-4,5-dihydro-4-thiazolyl]carbonyl]-L-leucine]-6-L-valine-;Bacitracin B1a; L-Asparagine,N-[[2-(1-amino-2-methylbutyl)-4,5-dihydro-4-thiazolyl]carbonyl]-L-leucyl-D-a-glutamyl-L-isoleucyl-L-lysyl-D-ornithyl-L-valyl-D-phenylalanyl-L-histidyl-D-a-aspartyl-, cyclic (10®4)-peptide,[4R-[2(1S*,2S*),4R*]]-