Impurities test for Trimethoprim (EP-8.0 method) - For Impurities-E, D, G, B, J and F

Impurities test for Trimethoprim (EP-8.0 method) - For Impurities-H & I: SAMPLE PREPARATION: Test Solution: Dissolve 25mg of Trimethoprim in Mobile phase and dilute to 25ml with mobile phase Reference solution (a): Dilute 1ml of test solution to 200ml with…

Impurities test for Sulfadiazine (EP-8.0 method): SAMPLE PREPARATION: Solvent Mixture: 40 g/L solution of Sodium Hydroxide, Acetonitrile, Water (2:20:60 v/v/v) Test Solution: Dissolve 50 mg of Sulfadiazine in solvent mixture and dilute to 100ml with water. Reference solution (a): Dissolve…

Impurities test for Cefradine (EP- method): SAMPLE PREPARATION: Reference solution-a: Dissolve 3.0 mg of Impurity-B in Mobile phase A and dilute to 50 ml with mobile phase A. Reference solution-b: Dissolve 3.0 mg of Cefradine and Cefalexin monohydrate in Mobile…

Impurities test for Mefenamic Acid (EP- method): SAMPLE PREPARATION: Test solution: Dissolve 25 mg of Mefenamic acid in mobile phase and dilute to 25 ml with mobile phase. Reference Solution A: Dissolve 1mL of test solution to 100 mL with…