This product can be prepared by dissolving 50 mg in 1 ml in ethanol plus 0.813 ml of 1N NaOH. Solutions are stable for at least 1 month at -20°C. Prior to use, adjust the pH to 7.2 by adding 1N HCl, dropwise. Neutralized solutions should be used immediately. Simvastatin is also soluble at >20 mg/mL in DMSO. Long term solution stability in DMSO has not been determined. See the links below for other Simvastatin products that provide additional helpful information in addition to use as an analytical standard.
567020
https://www.sigmaaldrich.com/product/mm/567020