Ivermectin EP Impurity J

Chemical Name: 2,3-didehydro-5-O-demethyl-25-de(1-methylpropyl)-25-(1-methylethyl)-3,4,22,23-tetrahydroavermectin A1a (as per EP),

Smile: O[C@]1(C(C(O[C@H](C2)C[C@](C/C=C3\C)([H])O[C@]42CC[C@H](C)[C@](C(C)([H])C)([H])O4)=O)=CC(C)[C@H]5O)[C@]5([H])OC/C1=C\C=C\[C@@H]([C@@H]3O[C@@](O[C@@H](C)[C@@H]6O[C@](C[C@H](OC)[C@H]7O)([H])O[C@H]7C)([H])C[C@@H]6OC)C