A diketone in which the two keto groups are separated by a single carbon atom.
| Member | Definition | Role |
|---|
| 1,3-cyclohexanedione | A cyclohexanedione carrying oxo substituents at positions 1 and 3. | cyclohexane-1,3-dione |
| 1,3-indandione | A member of the class of indanones that is indane in which the hydrogens at positions 2 and 4 have been replaced by oxo groups. | 1,3-indandione |
| 2-[(4,4-dimethyl-2,6-dioxocyclohexyl)methyl]-5,5-dimethylcyclohexane-1,3-dione | | 2-[(4,4-dimethyl-2,6-dioxocyclohexyl)methyl]-5,5-dimethylcyclohexane-1,3-dione |
| 2,2'-methylenebis(1,3-cyclohexanedione) | | 2-[(2,6-dioxocyclohexyl)methyl]cyclohexane-1,3-dione |
| 3-methyl-2,4-nonanedione | | 3-Methyl-2,4-nonanedione |
| 4-(3-methyl-5-isoxazolyl)-5-phenylcyclohexane-1,3-dione | | 4-(3-methyl-5-isoxazolyl)-5-phenylcyclohexane-1,3-dione |
| 5-(2-furanyl)cyclohexane-1,3-dione | | 5-(2-furanyl)cyclohexane-1,3-dione |
| acetylacetone | A beta-diketone that is pentane in which the hydrogens at positions 2 and 4 are replaced by oxo groups. | acetylacetone |
| acetylpyruvic acid | A dioxo monocarboxylic acid that is pentanoic acid carrying two oxo groups at positions 2 and 4. | acetylpyruvic acid |
| alpha(-(cyclopropylcarbonyl)-2-(methyvlsulfonyl)-beta-oxo-4-(trifluromethyl)benzenepropanenitrile) | A beta-diketone and nitrile resulting from the the degradation of the isoxazole ring of isoxaflutole. The active herbicide of the proherbicide isoxaflutole. | 2-cyano-3-cyclopropyl-1-(2-mesyl-4-trifluoromethylphenyl)propan-1,3-dione |
| anisindione | A cyclic beta-diketone consisting of indane-1,3-dione having a 4-methoxyphenyl substituent at the 4-position. | anisindione |
| berkeleydione | A meroterpenoid found in Penicillium rubrum. It has been shown to exhibit inhibitory activity against caspase-1. | berkeleydione |
| berkeleytrione | A meroterpenoid found in Penicillium rubrum and has been shown to exhibit inhibitory activity against caspase-1. | berkeleytrione |
| bisdemethoxycurcumin | A beta-diketone that is methane in which two of the hydrogens are substituted by 4-hydroxycinnamoyl groups. | bisdemethoxycurcumin |
| curcumin | A beta-diketone that is methane in which two of the hydrogens are substituted by feruloyl groups. A natural dyestuff found in the root of Curcuma longa. | curcumin |
| demethoxycurcumin | A beta-diketone that is curcumin in which one of the methoxy groups is replaced by hydrogen. It is found in Curcuma zedoaria and Etlingera elatior. | demethoxycurcumin |
| dibenzoylmethane | A beta-diketone that is acetylacetone (acac) in which both methyl groups have been replaced by phenyl groups. It is a minor constituent of the root extract of licorice (Glycyrrhiza glabra) and exhibits antimutagenic and anticancer effects. | dibenzoylmethane |
| fumarylacetoacetate | | 4-fumarylacetoacetic acid |
| gingerdione | | [6]-Gingerdione |
| maleylpyruvate | | 3-maleylpyruvic acid |
| mitorubrin | An azaphilone that is 7,8-dihydro-6H-2-benzopyran substituted by a methyl group at position 7, oxo groups at positions 6 and 8, a propenyl group at position 3 and a (2,4-dihydroxy-6-methylbenzoyl)oxy group at position 7. | mitorubrin |
| ninhydrin | A member of the class of indanones that is indane-1,3-dione bearing two additional hydroxy substituents at position 2. | ninhydrin |
| phenindione | | phenindione |
| quinophthalone | A quinoline derivative with a 1,3-dioxoindan-2-yl substituent at C-2. | quinoline yellow |
| succinylacetoacetate | An alpha,omega-dicarboxylic acid that is suberic acid which oxo groups replace the hydrogens at positions 3 and 5. It is an abnormal metabolite of the tyrosine metabolic pathway and a marker for type 1 tyrosinaemia. | 3,5-dioxooctanedioic acid |
| succinylacetone | A dioxo monocarboxylic acid that is heptanoic acid in which oxo groups replace the hydrogens at positions 4 and 6. It is an abnormal metabolite of the tyrosine metabolic pathway and a marker for type 1 tyrosinaemia. | 4,6-dioxoheptanoic acid |
| tetrahydrocurcumin | A beta-diketone that is curcumin in which both of the double bonds have been reduced to single bonds. | tetrahydrocurcumin |
| tetrahydroxycurcumin | A beta-diketone that is curcumin in which the two methoxy groups have been replaced by hydroxy groups. It is a metabolite of curcumin. | tetrahydroxycurcumin |