Guaiacol, cas no:90-05-1,1-hydroxy 2- methoxybenzene,colorless or yellow crystal or ... tar (mainly beech) by distillation mostly between 203 and 220 C. It is synthesized from anisole also. The dimethyl ether of ... your demands. Guaiacol(99%TC), Vanillin material, Cas no:90-05-1,1-hydroxy 2- methoxybenzene