Caspofungin Impurity B

Chemical Name: (10R,12S)-N-((2R,6S,9S,11R,12R,14aS,15S,20S,23S,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-((R)-1-hydroxyethyl)-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

Synonym: (3S,5R)-Atorvastatin Acid Methyl Ester

Smile: NCCN[C@H](NC([C@@H]1[C@@H](O)CCN1C([C@H]([C@H](O)CCN)NC([C@H]([C@H](O)[C@@H](O)C2=CC=C(O)C=C2)NC3=O)=O)=O)=O)[C@H](O)C[C@H](NC(CCCCCCCC[C@@H](C)C[C@@H](C)CC)=O)C(N[C@H](C(N4[C@H]3C[C@@H](O)C4)=O)[C@H](O)C)=O