4-Methyl-1,2-dihydroxybenzene; 2-Hydroxy-4-methylphenol; 4-Methyl-1,2-benzenediol (4-methylpyrocatechol); 4-methyl-2-benzenediol; 4-methyl-benzene-1,2-diol; 4-methyl-pyrocatecho; p-methylcatechol; p-Methylpyrocatechol