Natraj KS. Analytical Method Development and Validation for the Estimation of Related Substances in Oxybutynin HCl Prolonged Release Tablets by Reverse-Phase High- Performance Liquid Chromatographic: Analytical Method Development and Validation for the Estimation of Related Substances in Oxybutynin HCl Prolonged Release Tablets by Reverse-Phase High- Performance Liquid Chromatographic. ijpba [Internet]. 2018 Oct. 5 [cited 2024 May 1];9(03). Available from: http://www.ijpba.info/index.php/ijpba/article/view/1659