Skip to main content
Fig. 1 | BMC Chemistry

Fig. 1

From: Simultaneous determination of colistin sulfate and tigecycline in human plasma by liquid chromatography-tandem mass spectrometry method

Fig. 1

Chemical structure of polymyxin E1, polymyxin E2, and polymyxin B1. Dab = L-α,γ-diaminobutyric acid. α and γ indicate the respective-NH2 involved in the peptide linkage. Polymyxin B1: R = (+)-6-methyloctanoate, X = Phe; polymyxin E1: R = (+)-6-methyloctanoate, X = D-Leu; polymyxin E2: R = (+)-6-methylheptanoate, X = D-Leu

Back to article page

BMC Chemistry

ISSN: 2661-801X

Contact us