Classification Term: 3861
O-benzoquinones (ontology term: CHEMONTID:0002492)
Benzoquinones where the two C=O groups are attached at the 1- and 2-positions, respectively." []
found 4 associated metabolites at no_class-level_9 metabolite taxonomy ontology rank level.
Ancestor: Benzoquinones
Child Taxonomies: There is no child term of current ontology term.
1,2-Benzoquinone
1,2-Benzoquinone is a reactive electrophile that is an intermediate in benzene metabolism. It is substrate for the enzyme Catechol oxidase (EC 1.10.3.1) and can be generated from the oxidation of catechol. 1,2-Benzoquinone is capable of reacting with blood proteins to produce adducts. 1,2-Benzoquinone, also called ortho-benzoquinone or cyclohexa-3,5-diene-1,2-dione, is a ketone, with formula C6H4O2. It is one of the two isomers of quinone, the other being 1,4-benzoquinone. O-Quinone is found in tea.
4-Bromo-3,5-cyclohexadiene-1,2-dione
4-Bromo-3,5-cyclohexadiene-1,2-dione, also known as 4-bromo-1,2-Benzoquinone, is classified as a member of the O-benzoquinones. O-benzoquinones are benzoquinones where the two C=O groups are attached at the 1- and 2-positions, respectively. 4-Bromo-3,5-cyclohexadiene-1,2-dione is considered to be slightly soluble (in water) and basic
Dopamine quinone
Dopamine-quinone is synthesized by oxidation of the catechol ring of dopamine. If this occurs within the neuronal cytosol, the quinone may react with cytosolic components, particularly with cysteine residues. (PMID: 12835101). Dopamine quinone is produce by the reaction between dopamine and oxygen, with water as the byproduct. The reaction is catalyzed by the tyrosinase precursor. Dopamine-quinone is synthesized by oxidation of the catechol ring of dopamine. If this occurs within the neuronal cytosol, the quinone may react with cytosolic components, particularly with cysteine residues. (PMID: 12835101)
3-(2-propenoic acid)-o-benzoquinone
3-(2-propenoic acid)-o-benzoquinone is slightly soluble (in water) and a weakly acidic compound (based on its pKa). 3-(2-propenoic acid)-o-benzoquinone can be found in a number of food items such as vaccinium (blueberry, cranberry, huckleberry), rice, skunk currant, and borage, which makes 3-(2-propenoic acid)-o-benzoquinone a potential biomarker for the consumption of these food products.