... creosote, pyroligneous oil, eucalyptus oil, guaiacol and other types of high value-added fine chemical products in the process of machine ... in marine cables, rubber plasticizers, pharmaceutical products and other industries.Guaiacol: extracted from wood tar, widely used in the pharmaceutical, ... , mouthwash, insecticides, toothpaste, tooth powder, candy flavors etc. Guaiacol for Pharmaceutical Industry