2-[(4R,6S)-6-[(R)-8-Fluoro-4-isopropyl-2-(N-methylmethylsulfonamido)-5,6-dihydrobenzo[h]quinazolin-6-yl]-2,2-dimethyl-1,3-dioxan-4-yl]acetic Acid tert-Butyl Ester

2-[(4R,6S)-6-[(R)-8-Fluoro-4-isopropyl-2-(N-methylmethylsulfonamido)-5,6-dihydrobenzo[h]quinazolin-6-yl]-2,2-dimethyl-1,3-dioxan-4-yl]acetic Acid tert-Butyl Ester product with CAS: NA is also known as tert-Butyl 2-[(4R,6S)-6-[(R)-8-Fluoro-4-isopropyl-2-(N-methylmethylsulfonamido)-5,6-dihydrobenzo[h]quinazolin-6-yl]-2,2-dimethyl-1,3-dioxan-4-yl)acetate. This product can be used as a working standard or secondary reference standard. Additional internal validation as per respective FDA regulations/guidelines may require. 2-[(4R,6S)-6-[(R)-8-Fluoro-4-isopropyl-2-(N-methylmethylsulfonamido)-5,6-dihydrobenzo[h]quinazolin-6-yl]-2,2-dimethyl-1,3-dioxan-4-yl]acetic Acid tert-Butyl Ester is generally used for Quality Control (QC), Quality Assurance (QA) during commercial production of Rosuvastatin and its related formulations. Moreover, tert-Butyl 2-[(4R,6S)-6-[(R)-8-Fluoro-4-isopropyl-2-(N-methylmethylsulfonamido)-5,6-dihydrobenzo[h]quinazolin-6-yl]-2,2-dimethyl-1,3-dioxan-4-yl)acetate is also used in the process of Abbreviated New Drug Application (ANDA) filing to FDA and toxicity study of respective drug formulation.