Nahma, Teba Moayad. “Synthesis of Some New Mannich Bases Derivative from Pyrazyine and α-Amino Acid”. American Journal of Biology and Natural Sciences 2, no. 9 (September 27, 2025): 256–261. Accessed June 4, 2026. https://biojournals.us/index.php/AJBNS/article/view/1496.