First of all, we only have the reference substance of lactones of Atorvastatin, and we will not examine the interference of lactones of Atorvastatin, o-hydroxy Atorvastatin and p-hydroxy Atorvastatin in the method verification.
First of all, we only have a control of lactones of Atorvastatin, and we don't look at the interference of lactones of Atorvastatin, o-hydroxy Atorvastatin and p-hydroxy Atorvastatin in methodological validation.