Chemical Structure (Polymyxin B For Injection Usp 1)
This text appears to mention the sequence of amino acids (Dab, Phe, Leu, Thr) in the structure of Polymyxin B. It also indicates a structural difference between two variations of Polymyxin B molecule (R=CH3 and R=H). The text seems to be related to a chemical or pharmaceutical study of Polymyxin B variants.*