Two Derivative Spectrophotometric Methods for the Simultaneous Determination of 4-AminoAntipyrine in Presence of Its Acidic Products. IHJPAS [Internet]. 2018 May 17 [cited 2024 May 6];31(1):114-23. Available from: https://jih.uobaghdad.edu.iq/index.php/j/article/view/1859