HPLC Separation of Active Compounds in Drug Formulation
An HPLC method for the separation of active drug compounds on a Primesep 200 column. The retention of compounds is achieved through reverse-phase, cation exchange and hydrophobic interactions. Benzoic acid, hyoscyamine sulfate and phenyl salicylate are baseline separated using simple mobile phases of water, acetonitrile (MeCN, ACN) and trifluoroacetic acid (TFA) with a UV detector.
Hyoscyamine is a natural plant belladonna alkaloid derivative and the levorotatory form of racemic atropine. It functions as a non-selective, competitive antagonist of muscarinic receptors and is used to treat a variety of stomach pains and intestinal problems as well as to decrease side effects of certain medications and insecticides. The drug does that by decreasing the acid production in the stomach and slowing down the natural movements of the gut. Primesep 200, a reverse phase column, contains embedded acidic ionizable groups and can retain Hyoscyamine. The method is UV compatible and can be used as a general approach for analyzing similar compounds.