O-neneneba methoxy phenol (o-methoxy-phenol in English) is also called 2-methoxy-phenol, o-hydroxyanisole, 2-hydroxynenenebd anisole, 1-hydroxy-2-nenenebe methoxybenzene, commonly known as Guaiacol, methyl catechol. At room temperature, it is a colorless or slightly yellow crystal, or a colorless to light yellow transparent oily liquid. There is a fragrant odor. Gradually turning dark when exposed to air or sunlight. The acidic components in wood distillation oil contain 60% -90% creosote oil, mainly Guaiacol. This product is flammable and poses a risk of combustion when exposed to high heat, open flames, or oxidants, releasing toxic smoke during combustion. Ortho Methoxy group phenol is a toxic chemical, which is irritating to skin and mucous membrane. It can cause serious damage to the eyes if it is contaminated with it. Skin contact can cause burning sensation, dermatitis and blisters. Oral administration can cause acute gastroenteritis, vomiting, diarrhea, and sometimes bloody. It is mainly used as insecticide, Catechol, perfume, medicine and other fields. The Molecular formula is C7H8O2.