Cyanocobalamin EP Impurity A

Chemical Name: Coα-[α-(5,6-dimethylbenzimidazolyl)]-Coβ-cyano-8β-hydroxycobamic a,b,d,e,g-pentaamidec,8-γ-lactone (as per EP)

Synonym: Cyanocobalamin 7β,8β-lactone ; cyanocobalamin c,8-lactone

Smile: N#[C-][Co+3]1([N-]2[C@@]3([H])[C@]4([C@](CC(N)=O)(C)[C@@H]5CCC(N)=O)C)([N](C6=C7)=C([C@@H](CCC(N)=O)C6(C)C)C(C)=C2[C@](C)(CCC(NC[C@@H](C)O8)=O)[C@H]3CC(N)=O)([N]9=CN([C@@H](O[C@H](CO)[C@H]%10O[P]8([O-])=O)[C@H]%10O)C%11=CC(C)=C(C)C=C9%11)[N]4=C5C(C)=C%12[N]1=C7[C@](CCC(N)=O)(OC%13=O)[C@@]%12(C%13)C