Quantitation of Pregabalin by HPLC-UV Method using Ninhydrin Derivatization: Development and Validation

Author(s): Fathiy Mutalabisin, Abul Bashar Mohammed Helaluddin, Pinaki Sengupta, Farahidah Mohamed, Bappaditya Chatterjee*

Journal Name: Current Pharmaceutical Analysis

Volume 17 , Issue 1 , 2021

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Graphical Abstract:


Introduction: A simple and reliable high performance liquid chromatographic method has been developed for the quantitative determination of pregabalin in bulk and dosage form. Pregabalin, a γ amino butyric acid analogue, has negligible sensitivity to UV or fluorescence detection. Hence, it has been derivatized by ninhydrin to form a chromophoric complex that could be quantified by UV detection.

Materials and Methods: The concentration of ninhydrin was set to 5 mg/ml and a phosphate buffer solution (pH 7.4) was used as a solvent for the reaction. The resultant complex was separated by HPLC and detected by a UV detector at 569nm wavelength.

Results: The developed method showed a linear response within 50 to 600 μg/mL of pregabalin. The method was accurate with mean recovery values within 100 ± 2%. The repeatability of the method was established by intra-day and inter-day precision study. Finally, a commercial pregabalin capsule was assayed by the developed HPLC method including ninhydrin derivatization. The result of the mean assay was found to be 100.37 ±2.94 %.

Conclusion: This is the first time we are reporting pregabalin analysis using ninhydrin derivatization for HPLC analysis. Therefore, the developed method can be considered as a significant improvement in pregabalin quantitation and it can be easily applied for routine quality control tests of pregabalin.

Keywords: Pregabalin, ninhydrin, precolumn derivatization, HPLC, UV detection, analytical method development, analytical method validation.

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Article Details

Year: 2021
Published on: 23 November, 2020
Page: [165 - 171]
Pages: 7
DOI: 10.2174/1573412916666191114120213
Price: $65

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PDF: 15