?NEW DISPERSE DYES FROM SUBSTITUTED PYRIDINES. PART-I. SYNTHESIS OF METHYL-4, 6,DmYDROXY-20xo-l-PHENYL-5-ARYLAZOPYRIDINE-3-CARBOXYLATE AND THEIR DERIVATIVES. Biological Sciences - PJSIR, [S. l.], v. 44, n. 4, p. 244–247, 2001. Disponível em: https://v2.pjsir.org/index.php/biological-sciences/article/view/1935. Acesso em: 10 mar. 2026.