Maintaining high levels of drug quality and safety is priority for the pharmaceutical industry. Pharmacopoeias have documented these standards as officially acknowledged pharmaceutical rules.

Ion exchange chromatography (IEX) is a versatile and widely used technique for separating biomolecules based on charge. It plays a critical role in protein purification in research and ...

WE have found that, when a mixture containing barbiturate, salicylate and acetophenetidin is subjected to chromatography on Whatman No. DE20 cellulosic ion-exchange paper in dilute ammonia solution, a ...

IN two previous communications, we 1,2 have shown that a mixture of phenobarbitone, acetophenetidin, salicylate and p-acetylaminophenol can be separated in 60–75 min. by a combined technique of ...