Irshad Alam M, Siddiqui A-U-R. Response Surface Method Aided Development and Validation of Stability Indicating RP-HPLC-UV Method for Impurities of Dextromethorphan Hydrobromide in API and Three Marketed Formulations. ajc [Internet]. 2021 Oct. 20 [cited 2024 Jul. 23];33(11):2737-45. Available from: https://asianpubs.org/index.php/ajchem/article/view/33_11_27