Sotalol Impurity B

Simvastatin USP RC G ; Simvastatin-3-en ; Methylene simvastatin ; 2"-Desethyl-2"-vinyl simvastatin ; (1S, 3R, 7S, 8S, 8aR)-8-[2-[(2R, 4R)-4-Hydroxy-6-oxotetrahydro-2H-pyran-2-yl]ethyl]-3, 7-dimethyl-1, 2, 3, 7, 8, 8a-hexahydronaphthalen-1-yl 2, 2-dimethylbut-3-enoate ;