S 7491 (OTTO) Simvastatin, ≥97% (HPLC) Cas 79902-63-9 - used as an inhibitor of HMG CoA reductase (HMGCR). S 7491 (OTTO) Simvastatin, ≥97% (HPLC) Cas 79902-63-9 - used to study its effects on epithelial to mesenchymal transition (EMT) and the prognosis of patients with lung adenocarcinoma.