Tran, H.T.C. et al. 2023. DEVELOPMENT AND VALIDATION OF LC-MS/MS FOR ANALYZING POTENTIAL GENOTOXIC IMPURITY ETHYL-(E/Z)-3-(2- CARBETHOXY-2-CYANOETHENYL) AMINO-1H-PYRAZOL-4- CARBOXYLAT IN ALLOPURINOL. Cantho Journal of Medicine and Pharmacy. 69 (Dec. 2023), 164–171. DOI:https://doi.org/10.58490/ctump.2023i69.976.