(4R,6S)-3,5-Dihydroxy-6-cyanohexanoic acid tertbutyl ester

Order Atorvastatin impurity standard with CAS: NA and speed up your Atorvastatin project. This product is also known as (3R,5S)-tert-butyl 6-cyano-3,5-dihydroxyhexanoate; and can be used as a working standard or secondary reference standard. Additional internal validation as per respective FDA regulations/guidelines may require. This compound is generally used for Quality Control (QC), Quality Assurance (QA) during commercial production of Atorvastatin and its related formulations. Moreover, (3R,5S)-tert-butyl 6-cyano-3,5-dihydroxyhexanoate is also used in the process of Abbreviated New Drug Application (ANDA) filing to FDA and toxicity study of respective drug formulation.