| Record Information |
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| Version | 5.0 |
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| Status | Expected but not Quantified |
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| Creation Date | 2007-07-11 09:24:51 UTC |
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| Update Date | 2020-02-26 21:26:41 UTC |
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| HMDB ID | HMDB0006710 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | Ubiquinone-4 |
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| Description | Ubiquinone-4 is a member of the chemical class known as Polyprenylbenzoquinones. These are compounds containing a polyisoprene chain attached to a quinone at the second ring position. Ubiquione-4 has just 4 isoprene units. Normally in humans it has 10 (CoQ10). Ubiquinone-4 is an intermediate in the synthesis of Ubiquionone 10. Ubiquinone-4 is a Coenzyme Q analogue that have been identified in brain. Based on the isoprenoid moiety, the presence of various coenzyme Q homologues in prokaryotes and eurkaryotes has been confirmed, and these homologues are classified as Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10, Q11, and Q12. The numbers, Qn, refer to the number of isoprenoid units attached at the 6- position on the benzoquinone ring of the coenzyme Q moiety. (PMID: 12064350 ) Coenzyme Q is the only type of Quinone naturally found in animals (other quinones such as vitamin K is provided by foods). Coenzyme Q is a fat-soluble and amphipathic compound that is the integral component of the electron transport chain in mitochondria. It is ubiquitous in nature and is found in subcellular organelles, serum lipoproteins, blood plasma, urine, and feces. Ubiquinones are amphipathic because of the benzoquinone ring (hydrophilic) and the polyisoprenoid side chain moiety (lipophilic). The primary role of coenzyme Q is to transfer electrons between redox components of the electron transport chain, to create a proton gradient across the inner mitochondrial membrane and drive ATP formation. Additional functions of coenzyme Q are to influence membrane fluidity; to recycle the radical forms of vitamin C and E; and, most important, to act as a lipid antioxidant protecting membrane phospholipids against peroxidation. Coenzyme Q is the only endogenously occurring lipid-soluble antioxidant that occurs ubiquitously and can be synthesized in all organisms. |
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| Structure | COC1=C(OC)C(=O)C(C\C=C(/C)CC\C=C(/C)CC\C=C(/C)CCC=C(C)C)=C(C)C1=O InChI=1S/C29H42O4/c1-20(2)12-9-13-21(3)14-10-15-22(4)16-11-17-23(5)18-19-25-24(6)26(30)28(32-7)29(33-8)27(25)31/h12,14,16,18H,9-11,13,15,17,19H2,1-8H3/b21-14+,22-16+,23-18+ |
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| Synonyms | | Value | Source |
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| 2,3-Dimethoxy-5-methyl-6-(3,7,11,15-tetramethyl-2,6,10,14-hexadecatetraenyl)-2,5-cyclohexadiene-1,4-dione | HMDB | | 2,3-Dimethoxy-5-methyl-6-(3,7,11,15-tetramethyl-2,6,10,14-hexadecatetraenyl)-P-benzoquinone | HMDB | | 2,3-Dimethoxy-5-methyl-6-[(2E,6E,10E)-3,7,11,15-tetramethyl-2,6,10,14-hexadecatetraenyl]-2,5-cyclohexadiene-1,4-dione | HMDB | | Coenzyme Q4 | HMDB | | CoQ4 | HMDB | | Ubiquinone 4 | HMDB | | Ubiquinone Q4 | HMDB |
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| Chemical Formula | C29H42O4 |
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| Average Molecular Weight | 454.6414 |
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| Monoisotopic Molecular Weight | 454.308309832 |
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| IUPAC Name | 2,3-dimethoxy-5-methyl-6-[(2E,6E,10E)-3,7,11,15-tetramethylhexadeca-2,6,10,14-tetraen-1-yl]cyclohexa-2,5-diene-1,4-dione |
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| Traditional Name | ubiquinone 4 |
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| CAS Registry Number | 4370-62-1 |
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| SMILES | COC1=C(OC)C(=O)C(C\C=C(/C)CC\C=C(/C)CC\C=C(/C)CCC=C(C)C)=C(C)C1=O |
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| InChI Identifier | InChI=1S/C29H42O4/c1-20(2)12-9-13-21(3)14-10-15-22(4)16-11-17-23(5)18-19-25-24(6)26(30)28(32-7)29(33-8)27(25)31/h12,14,16,18H,9-11,13,15,17,19H2,1-8H3/b21-14+,22-16+,23-18+ |
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| InChI Key | XGCJRRDNIMSYNC-INVBOZNNSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as ubiquinones. These are coenzyme Q derivatives containing a 5, 6-dimethoxy-3-methyl(1,4-benzoquinone) moiety to which an isoprenyl group is attached at ring position 2(or 6). |
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| Kingdom | Organic compounds |
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| Super Class | Lipids and lipid-like molecules |
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| Class | Prenol lipids |
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| Sub Class | Quinone and hydroquinone lipids |
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| Direct Parent | Ubiquinones |
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| Alternative Parents | |
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| Substituents | - Diterpenoid
- Ubiquinone skeleton
- Quinone
- P-benzoquinone
- Vinylogous ester
- Cyclic ketone
- Ketone
- Organic oxygen compound
- Organic oxide
- Hydrocarbon derivative
- Organooxygen compound
- Carbonyl group
- Aliphatic homomonocyclic compound
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| Molecular Framework | Aliphatic homomonocyclic compounds |
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| External Descriptors | |
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| Ontology |
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| Physiological effect | Not Available |
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| Disposition | |
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| Process | |
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| Role | |
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| Physical Properties |
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| State | Solid |
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| Experimental Molecular Properties | | Property | Value | Reference |
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| Melting Point | Not Available | Not Available | | Boiling Point | Not Available | Not Available | | Water Solubility | Not Available | Not Available | | LogP | Not Available | Not Available |
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| Experimental Chromatographic Properties | Not Available |
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| Predicted Molecular Properties | |
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| Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Retention Times Underivatized| Chromatographic Method | Retention Time | Reference |
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| Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022. Predicted by Afia on May 17, 2022. | 9.77 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 26.3368 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 0.64 minutes | 32390414 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 4262.8 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 667.3 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 323.9 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 310.0 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 108.0 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 1006.2 seconds | 40023050 | | BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid | 1104.8 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 104.3 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 2325.5 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 919.6 seconds | 40023050 | | UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid | 1664.3 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 657.3 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 548.3 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 246.9 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 635.6 seconds | 40023050 | | Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water | 8.9 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatized |
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| GC-MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Experimental GC-MS | GC-MS Spectrum - Ubiquinone-4 GC-MS (2 TMS) | splash10-0006-8569000000-59442bb36544f3769091 | 2014-06-16 | HMDB team, MONA, MassBank | View Spectrum | | Experimental GC-MS | GC-MS Spectrum - Ubiquinone-4 GC-MS (2 TMS) | splash10-000x-7689001000-c8660617cb5cd593222b | 2014-06-16 | HMDB team, MONA, MassBank | View Spectrum | | Experimental GC-MS | GC-MS Spectrum - Ubiquinone-4 GC-MS (Non-derivatized) | splash10-0006-8569000000-59442bb36544f3769091 | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | | Experimental GC-MS | GC-MS Spectrum - Ubiquinone-4 GC-MS (Non-derivatized) | splash10-000x-7689001000-c8660617cb5cd593222b | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Ubiquinone-4 GC-MS (Non-derivatized) - 70eV, Positive | splash10-000i-2559500000-8b9beaf0f7bae959247e | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Ubiquinone-4 GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Ubiquinone-4 GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum |
MS/MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Ubiquinone-4 10V, Positive-QTOF | splash10-0a4i-0222900000-7068674fa2846a47c74d | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Ubiquinone-4 20V, Positive-QTOF | splash10-059e-1974200000-fca47eaee65794b87205 | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Ubiquinone-4 40V, Positive-QTOF | splash10-014r-7479000000-faf4846ac88a76e1061d | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Ubiquinone-4 10V, Negative-QTOF | splash10-0udi-0001900000-e42e8d16aa71cad12871 | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Ubiquinone-4 20V, Negative-QTOF | splash10-0udj-0108900000-f9427f19705024476e83 | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Ubiquinone-4 40V, Negative-QTOF | splash10-000i-9106400000-f3a6445d4e177a9e3c4e | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Ubiquinone-4 10V, Negative-QTOF | splash10-0udi-0000900000-f1e50cbc29fd693b50b2 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Ubiquinone-4 20V, Negative-QTOF | splash10-0wt9-0810900000-90aff911f7896bf3991f | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Ubiquinone-4 40V, Negative-QTOF | splash10-0569-0947700000-77cf870cad7a1c209f85 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Ubiquinone-4 10V, Positive-QTOF | splash10-0002-2419200000-d730da3d3b74d9a19de0 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Ubiquinone-4 20V, Positive-QTOF | splash10-0002-4913000000-70d4eae966c9ef0997a0 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Ubiquinone-4 40V, Positive-QTOF | splash10-0535-7920000000-9705a4e6d45c5353a64f | 2021-09-24 | Wishart Lab | View Spectrum |
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