| Record Information |
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| Version | 1.0 |
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| Creation date | 2010-04-08 22:12:50 UTC |
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| Update date | 2025-11-19 01:52:08 UTC |
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| Primary ID | FDB017112 |
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| Secondary Accession Numbers | Not Available |
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| Chemical Information |
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| FooDB Name | Tetramethylquercetin |
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| Description | Retusin(ariocarpus), also known as 5-hydroxy-3,7,3',4'-tetramethoxyflavone or 3,7,3',4'-tetra-O-methylquercetin, is a member of the class of compounds known as 7-o-methylated flavonoids. 7-o-methylated flavonoids are flavonoids with methoxy groups attached to the C7 atom of the flavonoid backbone. Thus, retusin(ariocarpus) is considered to be a flavonoid lipid molecule. Retusin(ariocarpus) is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Retusin(ariocarpus) can be found in common oregano and mandarin orange (clementine, tangerine), which makes retusin(ariocarpus) a potential biomarker for the consumption of these food products. |
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| CAS Number | 1245-15-4 |
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| Structure | |
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| Synonyms | | Synonym | Source |
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| 2-(3,4-Dimethoxyphenyl)-5-hydroxy-3,7-dimethoxy-4H-1-benzopyran-4-one | ChEBI | | 3,3',4',7-O-Tetramethylquercetin | ChEBI | | 3,3',4',7-Tetramethylquercetin | ChEBI | | 3,7,3',4'-Tetramethylquercetin | ChEBI | | Quercetin 3,3',4',7-tetramethyl ether | ChEBI | | Quercetin 3,7,3',4'-tetramethyl ether | ChEBI | | Retusin | ChEBI | | Retusine | ChEBI | | 5-Hydroxy-3,7,3',4'-tetramethoxyflavone | MetaCyc, MeSH | | 3,7,3',4'-Tetra-O-methylquercetin | MetaCyc | | 5-Hydroxy-3,3',4',7-tetramethoxyflavone | db_source | | Flavone, 5-hydroxy-3,3',4',7-tetramethoxy- (8CI) | biospider | | Quercetin 3,7,3',4'-tetramethylether | biospider | | Quercetin tetramethylether | biospider | | Quercetin-3,7,3',4'-tetramethyl ether | biospider | | Retusin? | db_source | | Tetramethylquercetin | biospider |
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| Predicted Properties | |
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| Chemical Formula | C19H18O7 |
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| IUPAC name | 2-(3,4-dimethoxyphenyl)-5-hydroxy-3,7-dimethoxy-4H-chromen-4-one |
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| InChI Identifier | InChI=1S/C19H18O7/c1-22-11-8-12(20)16-15(9-11)26-18(19(25-4)17(16)21)10-5-6-13(23-2)14(7-10)24-3/h5-9,20H,1-4H3 |
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| InChI Key | HHGPYJLEJGNWJA-UHFFFAOYSA-N |
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| Isomeric SMILES | COC1=CC(O)=C2C(=O)C(OC)=C(OC2=C1)C1=CC=C(OC)C(OC)=C1 |
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| Average Molecular Weight | 358.342 |
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| Monoisotopic Molecular Weight | 358.10525293 |
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| Classification |
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| Description | Belongs to the class of organic compounds known as 7-o-methylated flavonoids. These are flavonoids with methoxy groups attached to the C7 atom of the flavonoid backbone. |
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| Kingdom | Organic compounds |
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| Super Class | Phenylpropanoids and polyketides |
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| Class | Flavonoids |
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| Sub Class | O-methylated flavonoids |
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| Direct Parent | 7-O-methylated flavonoids |
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| Alternative Parents | |
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| Substituents | - 3p-methoxyflavonoid-skeleton
- 3-methoxyflavonoid-skeleton
- 4p-methoxyflavonoid-skeleton
- 7-methoxyflavonoid-skeleton
- Hydroxyflavonoid
- Flavone
- 5-hydroxyflavonoid
- 3-methoxychromone
- Chromone
- 1-benzopyran
- Benzopyran
- Dimethoxybenzene
- O-dimethoxybenzene
- Anisole
- Phenoxy compound
- Phenol ether
- Methoxybenzene
- 1-hydroxy-4-unsubstituted benzenoid
- 1-hydroxy-2-unsubstituted benzenoid
- Alkyl aryl ether
- Pyranone
- Monocyclic benzene moiety
- Benzenoid
- Pyran
- Vinylogous acid
- Heteroaromatic compound
- Organoheterocyclic compound
- Oxacycle
- Ether
- Organic oxide
- Organic oxygen compound
- Hydrocarbon derivative
- Organooxygen compound
- Aromatic heteropolycyclic compound
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| Molecular Framework | Aromatic heteropolycyclic compounds |
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| External Descriptors | |
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| Ontology |
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| Ontology | No ontology term |
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| Physico-Chemical Properties |
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| Physico-Chemical Properties - Experimental | | Property | Value | Reference |
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| Physical state | Not Available | |
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| Physical Description | Not Available | |
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| Mass Composition | C 63.68%; H 5.06%; O 31.25% | DFC |
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| Melting Point | Mp 159-160° | DFC |
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| Boiling Point | Not Available | |
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| Experimental Water Solubility | Not Available | |
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| Experimental logP | Not Available | |
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| Experimental pKa | Not Available | |
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| Isoelectric point | Not Available | |
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| Charge | Not Available | |
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| Optical Rotation | Not Available | |
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| Spectroscopic UV Data | Not Available | |
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| Density | Not Available | |
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| Refractive Index | Not Available | |
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| Spectra |
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| Spectra | |
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| EI-MS/GC-MS | | Type | Description | Splash Key | View |
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| Predicted GC-MS | Tetramethylquercetin, non-derivatized, Predicted GC-MS Spectrum - 70eV, Positive | splash10-004l-0419000000-8001f334e7bd21c10638 | Spectrum | | Predicted GC-MS | Tetramethylquercetin, non-derivatized, Predicted GC-MS Spectrum - 70eV, Positive | Not Available | Spectrum | | Predicted GC-MS | Tetramethylquercetin, TMS_1_1, Predicted GC-MS Spectrum - 70eV, Positive | Not Available | Spectrum | | Predicted GC-MS | Tetramethylquercetin, TBDMS_1_1, Predicted GC-MS Spectrum - 70eV, Positive | Not Available | Spectrum |
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| MS/MS | | Type | Description | Splash Key | View |
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| Predicted MS/MS | Predicted LC-MS/MS Spectrum - 10V, Positive | splash10-0a4i-0009000000-95e43140d41719d30219 | 2016-08-01 | View Spectrum | | Predicted MS/MS | Predicted LC-MS/MS Spectrum - 20V, Positive | splash10-0a4i-0009000000-577082fa366951f488db | 2016-08-01 | View Spectrum | | Predicted MS/MS | Predicted LC-MS/MS Spectrum - 40V, Positive | splash10-01dr-2966000000-bf2e0d3fb4407ec38faa | 2016-08-01 | View Spectrum | | Predicted MS/MS | Predicted LC-MS/MS Spectrum - 10V, Negative | splash10-0a4i-0009000000-8a5664df7dbdeed5c497 | 2016-08-03 | View Spectrum | | Predicted MS/MS | Predicted LC-MS/MS Spectrum - 20V, Negative | splash10-0a4i-0029000000-3d02636a4b753879db62 | 2016-08-03 | View Spectrum | | Predicted MS/MS | Predicted LC-MS/MS Spectrum - 40V, Negative | splash10-02g5-1982000000-9cfa3016640c970c7261 | 2016-08-03 | View Spectrum |
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| NMR | Not Available |
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| External Links |
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| ChemSpider ID | 4508983 |
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| ChEMBL ID | CHEMBL77966 |
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| KEGG Compound ID | Not Available |
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| Pubchem Compound ID | 5352005 |
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| Pubchem Substance ID | Not Available |
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| ChEBI ID | Not Available |
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| Phenol-Explorer ID | Not Available |
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| DrugBank ID | Not Available |
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| HMDB ID | Not Available |
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| CRC / DFC (Dictionary of Food Compounds) ID | HBR39-C:KWF31-K |
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| EAFUS ID | Not Available |
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| Dr. Duke ID | RETUSIN |
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| BIGG ID | Not Available |
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| KNApSAcK ID | C00004653 |
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| HET ID | Not Available |
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| Food Biomarker Ontology | Not Available |
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| VMH ID | Not Available |
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| Flavornet ID | Not Available |
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| GoodScent ID | Not Available |
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| SuperScent ID | Not Available |
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| Wikipedia ID | Retusin |
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| Phenol-Explorer Metabolite ID | Not Available |
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| Duplicate IDS | Not Available |
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| Old DFC IDS | Not Available |
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| Associated Foods |
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| Food | Content Range | Average | Reference |
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| Food | | | Reference |
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| Biological Effects and Interactions |
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| Health Effects / Bioactivities | | Descriptor | ID | Definition | Reference |
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| Antitumor | 35610 | An agent that inhibits tumor growth and proliferation, playing a crucial role in cancer treatment. Therapeutically, antitumors are used to manage various types of cancer, including chemotherapy, targeted therapy, and immunotherapy, helping to reduce tumor size, prevent metastasis, and improve patient outcomes. | DUKE | | Cytotoxic | 52209 | An agent that kills or damages cells, playing a biological role in immune responses and therapeutic applications in cancer treatment. Key medical uses include chemotherapy, targeting and destroying cancer cells, and treating certain autoimmune diseases by eliminating harmful cells. | DUKE |
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| Enzymes | Not Available |
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| Pathways | Not Available |
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| Metabolism | Not Available |
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| Biosynthesis | Not Available |
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| Organoleptic Properties |
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| Flavours | Not Available |
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| Files |
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| MSDS | Not Available |
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| References |
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| Synthesis Reference | Not Available |
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| General Reference | Not Available |
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| Content Reference | — Duke, James. 'Dr. Duke's Phytochemical and Ethnobotanical Databases. United States Department of Agriculture.' Agricultural Research Service, Accessed April 27 (2004).
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