Lu TP, Cao TKT, Nguyen MH, et al. BOX-BEHNKEN DESIGN FOR THE OPTIMIZATION OF SYNTHESIS IMPURITIES B AND E OF ALLOPURINOL. CTJUMP. 2023;(26):142-150. Accessed August 14, 2026. https://tapchi.ctump.edu.vn/index.php/ctump/article/view/1711