Isradipine EP Impurity E

Chemical Name: Mixture of 3-methyl 5-(propan-2-yl) (4RS)-4-(2,1,3-benzoxadiazol-4-yl)-2-[(1EZ)-2-(2,1,3-benzoxadiazol-4-yl)ethen-1-yl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate and 5-methyl 3-(propan-2-yl) (4RS)-4-(2,1,3-benzoxadiazol-4-yl)-2-[(1EZ)-2-(2,1,3-benzoxadiazol-4-yl)ethen-1-yl]-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate (as per EP)

Smile: CC1=C([C@@]([H])(C(C(OC)=O)=C(N1)/C=C/C2=CC=CC3=NON=C23)C4=CC=CC5=NON=C45)C(OC(C)C)=O