High-performance liquid chromatographic determination of nitroglycerin in sublingual, sustained-release, and ointment dosage forms.

A rapid, precise, sensitive, and specific assay for nitroglycerin in sublingual, sustained-release, and ointment dosage forms using high-performance liquid chromatography is described. The nitroglycerin dosage forms were dissolved in methanol, filtered, and injected directly into the liquid chromatograph. A variable-wavelength UV detector operated at 220 nm and a C18 microporous silica column were employed. The mobile phase was methanol-water (40:60).