Daptomycin Impurity 22

Chemical Name: (3S)-3-((R)-4-amino-2-((S)-2-decanamido-3-(1H-indol-3-yl)propanamido)-4-oxobutanamido)-4-(((2R,5S,11R,14S,17S,20R,21S,27S)-17-(2-(2-aminophenyl)-2-oxoethyl)-27-(3-aminopropyl)-5-(carboxymethyl)-14-((S)-1-carboxypropan-2-yl)-11-(hydroxymethyl)-2,20-dimethyl-3,6,9,12,15,18,22,25,28,32,33-undecaoxo-19-oxa-1,4,7,10,13,16,23,26,29-nonaazabicyclo[28.2.1]tritriacontan-21-yl)amino)-4-oxobutanoic acid

Synonym: (2’R,3R,3’S)-rel-2’-Methylspiro[1-azabicyclo[2.2.2]octane-3,5’-oxathiolane] 3’-Oxide; CEV S-Oxide 1