Simvastatin ammonium salt139893-43-9100 % similar Simvastatin79902-63-972 % similar Pravastatin81093-37-056 % similar Lovastatin sodium salt75225-50-252 % similar Lovastatin75330-75-549 % similar Pravastatin sodium81131-70-643 % similar Mevastatin73573-88-336 % similar