Al-Mouamin, Thanaa M, and Sumaya J Abid. “Synthesis of New Nucleoside Analogues from Theobromine”. Al-Nahrain Journal of Science, no. 2 (January 10, 2019): 17–29. Accessed May 22, 2026. https://anjs.edu.iq/index.php/anjs/article/view/2045.