Caspofungin Impurity A

Chemical Name: (10R,12S)-N-((2R,6S,9S,11R,12R,14aS,15S,20S,25aS)-20-((R)-3-amino-1-hydroxypropyl)-12-((2-aminoethyl)amino)-23-((1S,2S)-1,2-dihydroxy-2-(4-hydroxyphenyl)ethyl)-2,11,15-trihydroxy-6-(hydroxymethyl)-5,8,14,19,22,25-hexaoxotetracosahydro-1H-dipyrrolo[2,1-c:2',1'-l][1,4,7,10,13,16]hexaazacyclohenicosin-9-yl)-10,12-dimethyltetradecanamide

Smile: O=C([C@](NC(C(NC([C@@](C[C@@H](O)C1)([H])N1C2=O)=O)[C@H](O)[C@H](C3=CC=C(O)C=C3)O)=O)([H])[C@H](O)CCN)N(CC[C@@H]4O)[C@]4([H])C(N[C@H]([C@@H](C[C@@H](C(N[C@@]2([H])CO)=O)NC(CCCCCCCC[C@@H](C)C[C@@H](C)CC)=O)O)NCCN)=O