| Synonyms: | (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 3-hydroxy-2,2-dimethylbutanoate;3-Hydroxy-2,2-diMethylbutanoic Acid;Simvastatin beta-Hydroxy Impurity;Butanoic acid, 3-hydroxy-2,2-dimethyl-, 1,2,3,7,8,8a-hexahydro-3,7-dimethyl-8-[2-(tetrahydro-4-hydroxy-6-oxo-2H-pyran-2-yl)ethyl]-1-naphthalenyl ester;Simvastatin Impurity 8（EP-G）;(Rac)-3′-Hydroxy simvastatin;Simvastatin beta-Hydroxy Impurity / 3-Hydroxy Simvastatin |