Synonyms: 2-Methoxyphenol, 1-Hydroxy-2-methoxybenzene, 2-Hydroxyanisole, Anastil, Guaiastil, Methylcatechol, NSC 3815, O-Methyl catechol, Pyrocatechol monomethyl ether, Pyroguaiac acid, o-Guaiacol, o-Hydroxyanisole, o-Methoxyphenol,Guaiacol, Guaifenesin Imp. A (EP)