Amanda, Eviomitta Rizki, Anisa Suci Rosmawati, Lilik Nurfadlilah, Gama Prakoso Buono, and Yani Ambari. “Method Validation of Silica Dispersive Solid Phase Extraction Combined With Spectrophotometer UV-Vis for the Determination of Allopurinol in Herbal Medicine”. PHARMACY: Jurnal Farmasi Indonesia (Pharmaceutical Journal of Indonesia) 19, no. 1 (July 31, 2022): 77–87. Accessed July 7, 2026. http://jurnalnasional.ump.ac.id/index.php/PHARMACY/article/view/10219.