(3RS.5SR)-Atorvastatin EP Impurity B (Calcium Salt)
Impurity reference standard · (3RS.5SR)-Atorvastatin
- CAS number
- —
- Molecular formula
- C33H34FN2O5 · 0.5*Ca
- Molecular weight
- 577.67
- Purity
- 95%+
- Storage
- -20℃±5℃
About (3RS.5SR)-Atorvastatin EP Impurity B (Calcium Salt)
(3RS.5SR)-Atorvastatin EP Impurity B (Calcium Salt) is a specified impurity of (3RS.5SR)-Atorvastatin. It has no single publicly registered CAS number, so it is defined by the structure and molecular formula below.
The compound is characterised by its molecular formula C33H34FN2O5 · 0.5*Ca and a molecular weight of 577.67, with the two-dimensional structure shown above. Because it shares the (3RS.5SR)-Atorvastatin scaffold, it is typically used to track process-related and degradation impurities of (3RS.5SR)-Atorvastatin during method development, forced degradation and stability studies.
Each pack ships with a certificate of analysis reporting purity of 95%+ together with the supporting analytical data — HNMR, MS and HPLC or GC traces — so the material can be released straight into your own QC workflow. Recommended storage: -20℃±5℃.
Available from stock in milligram to gram quantities; larger or custom synthesis requirements are quoted on request.
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