1.0 2010-04-08 22:06:07 UTC 2025-11-18 22:55:26 UTC FDB004174 Vulgarol Vulgarol, also known as 2,5-dihydroxy-3,6-diphenyl-1,4-benzoquinone, is a member of the class of compounds known as P-benzoquinones. P-benzoquinones are benzoquinones where the two C=O groups are attached at the 1- and 4-positions, respectively. Vulgarol is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Vulgarol can be found in mugwort, which makes vulgarol a potential biomarker for the consumption of this food product. 2,5-Cyclohexadiene-1,4-dione, 2,5-dihydroxy-3,6-diphenyl- 2,5-Dihydroxy-3,6-diphenyl-2,5-cyclohexadiene-1,4-dione 2,5-Dihydroxy-3,6-diphenyl-p-benzoquinone 2,5-Dihydroxy-3,6-diphenylbenzo-1,4-quinone Orygameic acid p-Benzoquinone, 2,5-dihydroxy-3,6-diphenyl- Polyporic acid Polyporin Vulgarol C18H12O4 292.2855 292.073558872 2,5-dihydroxy-3,6-diphenylcyclohexa-2,5-diene-1,4-dione polyporic acid OC1=C(C2=CC=CC=C2)C(=O)C(O)=C(C2=CC=CC=C2)C1=O InChI=1S/C18H12O4/c19-15-13(11-7-3-1-4-8-11)16(20)18(22)14(17(15)21)12-9-5-2-6-10-12/h1-10,19,22H HZKFHDXTSAYOSN-UHFFFAOYSA-N belongs to the class of organic compounds known as p-benzoquinones. These are benzoquinones where the two C=O groups are attached at the 1- and 4-positions, respectively. P-benzoquinones Organic compounds Organic oxygen compounds Organooxygen compounds Carbonyl compounds Aromatic homomonocyclic compounds Benzene and substituted derivatives Enols Hydrocarbon derivatives Organic oxides Vinylogous acids Aromatic homomonocyclic compound Benzenoid Enol Hydrocarbon derivative Monocyclic benzene moiety Organic oxide P-benzoquinone Vinylogous acid logp 2.18 ALOGPS logs -3.74 ALOGPS solubility 5.34e-02 g/l ALOGPS logp 3.32 ChemAxon pka_strongest_acidic 7.83 ChemAxon pka_strongest_basic -4.2 ChemAxon iupac 2,5-dihydroxy-3,6-diphenylcyclohexa-2,5-diene-1,4-dione ChemAxon average_mass 292.2855 ChemAxon mono_mass 292.073558872 ChemAxon smiles OC1=C(C2=CC=CC=C2)C(=O)C(O)=C(C2=CC=CC=C2)C1=O ChemAxon formula C18H12O4 ChemAxon inchi InChI=1S/C18H12O4/c19-15-13(11-7-3-1-4-8-11)16(20)18(22)14(17(15)21)12-9-5-2-6-10-12/h1-10,19,22H ChemAxon inchikey HZKFHDXTSAYOSN-UHFFFAOYSA-N ChemAxon polar_surface_area 74.6 ChemAxon refractivity 83.87 ChemAxon polarizability 30.2 ChemAxon rotatable_bond_count 2 ChemAxon acceptor_count 4 ChemAxon donor_count 2 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon Specdb::MsMs 55533 Specdb::MsMs 55534 Specdb::MsMs 55535 Specdb::MsMs 110700 Specdb::MsMs 110701 Specdb::MsMs 110702 Specdb::MsMs 3600101 Specdb::MsMs 3600102 Specdb::MsMs 3600103 Specdb::MsMs 3600104 Specdb::MsMs 3600105 Specdb::MsMs 3600106 Mugwort Type 1 specific Artemisia vulgaris 4220