Impurities test for Metronidazole (EP-8.0 method)

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 Caffeine (EP-8.0 method): SAMPLE PREPARATION: Test Solution: Dissolve 0.1gm of Caffeine in Mobile phase, dilute to 50 ml, and dilute 1ml of this solution to 10ml with mobile phase. Reference solution (a): Dilute 2ml of test solution…

Impurities test for Amoxicillin (EP-8.0 method): SAMPLE PREPARATION: Test Solution (a): Dissolve 30 mg of Metronidazole in Mobile phase A and dilute to 50ml with mobile phase A. Test Solution (b): Dissolve 30 mg of Metronidazole in Mobile phase A,…

Impurities test for Hydrochlorothiazide (EP- method): SAMPLE PREPARATION: Reference solution-a: Dissolve 3mg of Impurity-A and 3mg of Hydrochlorothiazide in 5ml of mixture of equal volumes of acetonitrile and methanol if necessary dilute to 20ml with phosphate buffer solution pH 3.2.…