Guaiacol, cas no:90-05-1,1-hydroxy 2- methoxybenzene,colorless or yellow crystal or ... is called veratrol. They and their derivatives are used as an external antiseptic, expectorant, gastric sedative, deodorant, and as a parasiticide ... your demands. Guaiacol(99%TC), Vanillin material, Cas no:90-05-1,1-hydroxy 2- methoxybenzene