hydrogen peroxide hydrogenperoxide(1-) hydrogen(peroxide)(1-) CHEBI:29192 33.00674 InChI=1S/H2O2/c1-2/h1-2H/p-1 hydrogenperoxide(1-) hydrogendioxide(1-) [H]O[O-] Gmelin:507 HOO(-) HO2 HOO anion MHAJPDPJQMAIIY-UHFFFAOYSA-M [HO2](-) -1 CAS:14691-59-9 chebi_ontology 32.99820 dioxidanide HO2(-) oxygen hydride