... 3-dro-4-hydroxy-6-oxo-2h-pyran-2-yl)ethyl)-1-naphthalenyleste;7-beta,8-beta(2s*,4s*),8a-beta ... 4R)-TETRAHYDRO-4-HYDROXY-6-OXO-2H-PYRAN-2-YL]ETHYL]-1-NAPHTHALENYLY-2,2-DIMETHYL BUTANOATE;2,2-DIMETHYL-BUTYRIC ... 2R,4R)-4-HYDROXY-6-OXO-TETRAHYDRO-PYRAN-2-YL)-ETHYL]-3,7-DIMETHYL-1,2,3,7,8,8A- ... 1%Simvastatin hydroxyacid< 0.4%Lovastatin and epilovastatin< 1.0% High Quality Simvastatin (CAS No.:79902-63-9)