Internal Standard

Polymyxin B sulfate, 100mg

17 alpha(H),21ß(H)-(22RS)-Bishomohopane, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 54352-50-0

17ß(H),21 alpha(H)-Hopane, 100µg/mLin isooctane, 1ml