Development And Validation Of Stability Indicating Rp-Hplc Method For The Quantification Of Amine Impurity In Tofacitinib Tablets Dosage Form. Journal of Pharmaceutical Negative Results. Published online January 5, 2023:7650-7660. Accessed May 19, 2026. https://mail.pnrjournal.com/index.php/home/article/view/6118