INTERNATIONAL CONFERENCE ON HARMONIZATION RECOMMENDED FORCED DEGRADATION STUDIES AND DEVELOPMENT OF A NEW VALIDATED ISOCRATIC REVERSE-PHASE ULTRA HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY METHOD FOR THE SIMULTANEOUS ESTIMATION OF TELMISARTAN AND AMLODIPINE I
DOI:
https://doi.org/10.22159/ajpcr.2019.v12i6.32629Keywords:
Telmisartan,, Amlodipine,, Reverse-Phase ultra-high-performance liquid chromatography,, Forced degradation,, Method validationAbstract
Objective: The objective of this research work is to develop a simple, rapid, cost-effective, accurate, precise, and robust stability-indicating reversephase ultra-high performance liquid chromatography method for the quantitative estimation of telmisartan (TEL) and amlodipine (AMD) in combined tablet dosage form.
Methods: The method uses Poroshell 120EC-C18 column (4.6 mm × 50 mm, 2.7 μm) with an optimized mobile phase containing acetonitrile:50 mM ammonium acetate buffer in the ratio (45:55 v/v), pH adjusted to 4.5 with acetic acid. The flow rate was 0.5 ml/min, column temperature at 25°C and detection was monitored by a PDA detector at a wavelength of 245 nm. International Conference on Harmonization (ICH) recommended stress degradation studies were performed on TEL, AMD standard drugs, and tablet formulations; further stressed samples were analyzed by the proposed method.
Results: Major degradation of TEL and AMD was observed under acidic, alkali, hydrolytic and oxidation conditions. The described method was validated as per the ICH guideline and validation parameters such as system suitability, linearity, accuracy, precision, specificity, and robustness results were within acceptable limits.
Conclusion: The method was found to be suitable and accurate for quantitative estimation and stability study of title drugs in pharmaceutical preparations.
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