1,2-Benzenediol 1,2-Dihydroxybenzene 120-80-9 16474-89-8 16474-90-1 2-Hydroxyphenol 20244-21-7 37349-32-9 4-06-00-05557 (Beilstein Handbook Reference) AI3-03995 BRN 0471401 Benzene, o-dihydroxy- C.I. 76500 C.I. Oxidation Base 26 CATECHOL CCRIS 741 CI 76500 CI Oxidation Base 26 Catechin (phenol) Catechol (phenol) Durafur developer C EINECS 204-427-5 Fouramine PCH Fourrine 68 HSDB 1436 Katechol [Czech] NCI-C55856 NSC 1573 Oxyphenic acid Pelagol Grey C Phthalhydroquinone Pyrocatechin Pyrocatechine Pyrocatechinic acid Pyrocatechol Pyrocatechuic acid Pyrokatechin [Czech] Pyrokatechol [Czech] o-Benzenediol o-Dihydroxybenzene o-Dioxybenzene o-Diphenol o-Hydroquinone o-Hydroxyphenol o-Phenylenediol ortho-Benzenediol ortho-Dihydroxybenzene ortho-Dioxybenzene ortho-Hydroquinone ortho-Hydroxyphenol ortho-Phenylenediol