Spectrophotometric Determination of Isoniazid in Pharmaceutical Preparations Using Oxidative Coupling Reaction with 2,4-dinitrophenylhydrazine. RSCI [Internet]. 2023 Mar. 1 [cited 2026 Jun. 27];32(1):149-60. Available from: https://rsci.uomosul.edu.iq/index.php/rsci/article/view/47674