Hasan, R.A. 2026. SPECTROPHOTOMETRIC ASSESSMENT OF VITAMIN B2 (RIBOFLAVIN) BY DIAZOTIZATION AND COUPLING REACTION WITH 2-AMINO-4-(3-PYRIMIDYL) PYRIMIDINE REAGENT. Journal for Technology and Science. 3, 4 (Sep. 2026), 167–176. DOI:https://doi.org/10.61796/ipteks.v3i4.604.