1,2,4-BENZENETRIOL 1,2,4-Trihydroxybenzene 1,3,4-Trihydroxybenzene 2,5-Dihydroxyphenol 4-06-00-07338 (Beilstein Handbook Reference) 533-73-3 AI3-19361 BRN 2042863 CCRIS 2987 EINECS 208-575-1 Hydroquinone, hydroxy- Hydroxyhydroquinone Hydroxyquinol NSC 2818 Oxyhydrochinon [German] Oxyhydroquinone