“DEVELOPMENT OF CHROMATOGRAPHIC METHOD AND VALIDATION FOR ESTIMATION OF PIRFENIDONE IN BULK AND PHARMACEUTICAL DOSAGE FORM ”, Int. Res. J. Pharm., vol. 10, no. 7, pp. 45–50, Jul. 2019, Accessed: Nov. 01, 2026. [Online]. Available: https://irjponline.org/index.php/irjp/article/view/549