Benztropine methylsulfonate can be analyzed by this reverse phase (RP) HPLC method with simple conditions. The mobile phase contains an acetonitrile (MeCN), water, and phosphoric acid. For Mass-Spec (MS) compatible applications the phosphoric acid needs to be replaced with formic acid. Smaller 3 µm particles columns available for fast UPLC applications. This liquid chromatography method is scalable and can be used for isolation impurities in preparative separation. It also suitable for pharmacokinetics.
Benztropine is a medical drug used in treatment of patients with Parkinson’s disease. It works as an acetylcholine blocker decreasing muscle stiffness. Benztropine can be retained in HPLC on Primesep SB mixed-mode column by hydrophobic and anion-exchange properties. The isocratic method uses a mobile phase of acetonitrile (ACN) and water with sulfuric acid buffer and UV detection at 220nm.