Formulation: A solid
Formal Name: N2-(6-methyl-1-oxooctyl)-L-2,4-diaminobutanoyl-L-threonyl-L-2,4-diaminobutanoyl-L-2,4-diaminobutanoyl-L-2,4-diaminobutanoyl-D-leucyl-L-leucyl-L-2,4-diaminobutanoyl-L-2,4-diaminobutanoyl-L-threonine, cyclic (10→4)-peptide, sulfate
Purity: ≥90%
Formula Markup: C53H100N16O13 • XH2SO4
Formula Weight: 1169,5
Shelf life (days): 1460
CAS Number: 207990-63-4
Notes: Polymyxin E1 is a peptide antibiotic and a major constituent of the cationic lipopeptide antibiotic colistin (Item No. 17584) originally isolated from B. polymyxa.{65834} It is active against P. aeruginosa and E. coli (MICs = 2 and 0.8 µg/ml, respectively).