Daptomycin Anhydro Impurity 

Chemical Name: Daptomycin Dehydrate ; Anhydro-Daptomycin ; (3S)-3-((R)-4-amino-2-((S)-2-decanamido-3-(1H-indol-3-yl)propanamido)-4-oxobutanamido)-4-(((5R,8S,11R,14R,15S,21S,24S,27R,30S)-11-(2-(2-aminophenyl)-2-oxoethyl)-21-(3-aminopropyl)-24-(carboxymethyl)-8-((R)-1-carboxypropan-2-yl)-5-(hydroxymethyl)-14,27-dimethyl-3,6,9,12,16,19,22,25,28,32,33-undecaoxo-13-oxa-1,4,7,10,17,20,23,26,29-nonaazabicyclo[28.2.1]tritriacontan-15-yl)amino)-4-oxobutanoic acid