COMPARATIVE QUALITY EVALUATION OF COMMERCIAL VITAMIN C SUPPLEMENTS USING UV–VISIBLE SPECTROPHOTOMETRY. IJCSR, [S. l.], v. 1, n. 1, p. 24–32, 2026. Disponível em: https://ijcsrjournal.com/index.php/ijcsr/article/view/6. Acesso em: 17 apr. 2026.