phenylazonaphthols Synthesis and Spectroscopic Study of Some Phenylazonaphthols Authors: Al-Saidi M. Z., Shtykov S. N. Synthesis of eight phenylazonaphthols containing hydroxyl-, carboxy-, sulpho- and aldehyde groups was described. The data concerning elemental, thermogravimetric analysis, NMR-spectra and electronic absorption spectra in ethanol were described.