Eribulin Impurity 5

Chemical Name: 11,15:18,21:24,28-triepoxy-7,9-ethano-12,15-methano-9H,15H-furo[3,2-i]furo[2’,3’:5,6]pyrano[4,3-b][1,4]dioxacyclopentacosin-5(4H)-one,2-[(2S)-2,3-dihydroxypropyl]hexacosahydro-3-methoxy-26-methyl-20,27-bis(methylene)-,(2R,3R,3aS,7R,8aS,9S,10aR,11S,12R,13aR,13bS,15S,18S,21S,24S,26R,28R,29aS)-

Synonym: USP Aspartame Related Compound A ; 2-((2S,5S)-5-benzyl-3,6-dioxopiperazin-2-yl)acetic acid

Smile: CO[C@@H]([C@@H](C[C@@H](O)CN)O1)[C@@H](CC(C[C@H]2CC[C@@]3([H])[C@]([C@H](O[C@@]4(O5)CC[C@H]6CC7=C)[C@H]8[C@@]([C@@H]5[C@]([H])(O8)C4)([H])O3)([H])O2)=O)[C@@H]1C[C@@H](O[C@@H](CC[C@@H]7O6)C[C@H]9C)C9=C