Impurities

Hi Friend,

We are manufacturing one product i.e Pantoprazole Sodium ER Tablet 20/40mg and in finished product we observed some known impurities i.e impurity ‘C’ which is on higher side around 0.21 (Limit- NMT 0.20)
I want to know form your side that from where such type impurities are generted.

Regards
Prashant