Daptomycin Impurity 21

Chemical Name: 2,2'-((3S,6S,9R,15S,18R,21S,24S,30S,31R)-30-((S)-2-((R)-4-amino-2-((S)-2-decanamido-3-(1H-indol-3-yl)propanamido)-4-oxobutanamido)-3-carboxypropanamido)-3-(2-(2-aminophenyl)-2-oxoethyl)-24-(3-aminopropyl)-6-((S)-1-carboxypropan-2-yl)-18-ethyl-9-(hydroxymethyl)-31-methyl-2,5,8,11,14,17,20,23,26,29-decaoxo-1-oxa-4,7,10,13,16,19,22,25,28-nonaazacyclohentriacontane-15,21-diyl)diacetic acid

Synonym: trans-2’-Methyl-spiro[1-azabicyclo[2.2.2]octane-3,5’-[1,3]oxathiolane] Hydrochloride;