Daptomycin Impurity 23

Chemical Name: (2S,5S,8R,14S,17R,20S,23S,29S,32S)-32-((R)-4-amino-2-((S)-2-decanamido-3-(1H-indol-3-yl)propanamido)-4-oxobutanamido)-2-(2-(2-aminophenyl)-2-oxoethyl)-23-(3-aminopropyl)-14,20-bis(carboxymethyl)-5-((R)-1-carboxypropan-2-yl)-29-((R)-1-hydroxyethyl)-8-(hydroxymethyl)-17-methyl-4,7,10,13,16,19,22,25,28,31-decaoxo-3,6,9,12,15,18,21,24,27,30-decaazatetratriacontanedioic acid

Synonym: (2R,2'R)-2'-methyl-4-azaspiro[bicyclo[2.2.2]octane-2,5'-[1,3]oxathiolane] 3'-oxide