How do I remove Propyl Parahydroxybenzoate and Methyl Parahydroxybenzoate from the sample with Fluocinolone acetonide ?

I have got HPLC method for identification related impurities and degradation products of fluocinolone acetonide, but two peaks (from degradation) are in the same place as Methyl...

23 March 2015 1,109 2 View