Polymyxin B3

Octanoylpolymyxin B

N2-(N2-Octanoyl-L-A2bu-L-Thr-L-A2bu-)cyclo(L-A2bu*-L-A2bu-D-Phe-L-Leu-L-A2bu-L-A2bu-L-Thr-)

(-)-N2-(Octanoyl-L-A2bu-L-Thr-L-A2bu-)cyclo(L-A2bu*-L-A2bu-D-Phe-L-Leu-L-A2bu-L-A2bu-L-Thr-)