This application note presents an alternative method for dissolution testing using ultraviolet-visible spectroscopy instead of liquid chromatography.
This document presents a study comparing UV-visible spectroscopy and liquid chromatography (LC) methods for dissolution testing of single and multi-component pharmaceutical formulations. The research utilizes the Agilent 8453 dissolution testing system, which combines a spectrophotometer with a multicell transport sampling system.
The study validates that identical results can be achieved by replacing LC with a faster UV-visible method. For single components like warfarin, direct absorbance detection was used at 306 nm. For multi-component formulations containing acetaminophen and caffeine, first-order derivative spectroscopy was employed to ensure accurate analysis despite spectral overlap.
The dissolution tests were performed using Distek 2100B, Erweka DT80 and Hanson SR8Plus dissolution baths configured according to apparatus 2, USP paddle method.
The analyses were performed with an Agilent 8453 dissolution testing system, comprising a spectrophotometer and multicell transport as a sampling system.
A diode-array-based UV-visible spectrophotometer using a sophisticated multicomponent analysis (MCA) algorithm with first-order derivatives was used.