... -oxo-2h-pyran-2-yl)ethyl)-1-naphthalenyleste;7-beta,8-beta(2s*,4s*),8a-beta))-alph;butanoicacid,2,2-dimethyl ... ;2,2-DIMETHYL-BUTYRIC ACID (1S,3R,7S,8S,8AR)-8-[2-((2R,4R)-4-HYDROXY-6-OXO-TETRAHYDRO-PYRAN-2 ... -YL)-ETHYL]-3,7-DIMETHYL-1,2,3,7,8,8A-HEXAHYDRO-NAPHTHALEN-1-YL ESTER CAS: 79902-63-9 ... .1%Simvastatin hydroxyacid< 0.4%Lovastatin and epilovastatin< 1.0% High Quality Simvastatin (CAS No.:79902-63-9)