Karuna Kumar B, Chandra Shekar K, Guna Sekaran V. Gradient High Performance Liquid Chromatography method for determination of related substances in (7-{4-[4-(1-Benzothiophen-4-YL] Butoxy} Quinolin-2(1H)-one) dosage form. J. Drug Delivery Ther. 2019;9(1-s):36-43. doi:10.22270/jddt.v9i1-s.2241