New Stability Indicating RP-HPLC Method for Estimation of the Drug Molnupiravir

Abstract

Background: Molnupiravir was granted approval by the UKS medicines and health product regulatory agency on 04 November 2021 and on 23 December 2021, granted emergency use of authorization by FDA. Objective: Provide a technique for measuring Molnupiravir in active pharmaceutical ingredients and formulations. Method: The wavelength maximum was found to be 236 nm. ICH guidelines were followed. The forced degradation study in the form of acidic, alkali, thermal, photolytic, hydrolytic, and oxidative stress conditions was carried out for Molnupiravir. Results: The method was linear, as measured by a coeffi cient of correlation (R2) of 0.9991 in the 10 to 50 μg/mL range. The %RSD for precision, accuracy, limit of detection (LoD), limit of quantitation (LoQ), ruggedness, and robustness was within acceptable limits per ICH Q2 (R1). Conclusion: HPLC equipped with a UV detector is used to create and verify the proposed method. An acetonitrile mobile phase component of 20% was used, demonstrating the more cost-eff ective technique. The extensive data of mobile phase optimization gives a complete idea of fi nal chromatographic conditions, which can be further implemented for future analysis. Molnupiravir shows less than 4% degradation under diff erent stress conditions. The forced degradation data helps show stability, indicating the behavior of Molnupiravir.