Simvastatin - Impurity D

476305-24-5

Simvastatin Dimer Impurity; (2R,4R)-2-[2-[(1S,2S,6R,8S,8aR)-8-[(2,2-dimethylbutanoyl)oxy]-2,6-dimethyl- 1,2,6,7,8,8a-hexahydronaphthalen-1-yl]ethyl]-6-oxotetrahydro-2H-pyran-4-yl (3R,5R)-7-[(1S,2S,6R,8S,8aR)-8-[(2,2-dimethylbutanoyl)oxy]-2,6-dimethyl-1,2,6,7,8,8ahexahydronaphthalen- 1-yl]-3,5-dihydroxyheptanoate; (3R,5R)-(2R,4R)-2-(2-{(1S,2S,6R,8S,8aR)-8-[(2,2-Dimethylbutanoyl)oxy]-2,6-dimethyl-1,2,6,7,8,8a-hexahydronaphthalen-1-yl}ethyl)-6-oxotetrahydro-2H-pyran-4-yl 7-{(1S,2S,6R,8S,8aR)-8-[(2,2-dimethylbutanoyl)oxy]-2,6-dimethyl-1,2,6,7,8,8a-hexahydronaphthalen-1-yl}-3,5-dihydroxyheptanoate; Simvastatin Related Compound D (USP);