Guaiacol, cas no:90-05-1,1-hydroxy 2- methoxybenzene,colorless or ... Guaiacol is the methyl ether of pyrocatechol. It is a main constituent of creosote obtained from wood tar ( ... external antiseptic, expectorant, gastric sedative, deodorant, and as a parasiticide. Methoxyphenols are used in manufacturing stabilizers and antioxidants ... (99%TC), Vanillin material, Cas no:90-05-1,1-hydroxy 2- methoxybenzene