| Record Information |
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| Version | 5.0 |
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| Status | Expected but not Quantified |
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| Creation Date | 2017-09-09 06:19:14 UTC |
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| Update Date | 2022-11-30 19:26:22 UTC |
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| HMDB ID | HMDB0115876 |
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| Secondary Accession Numbers | None |
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| Metabolite Identification |
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| Common Name | PA(i-21:0/a-21:0) |
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| Description | PA(i-21:0/a-21:0) is a phosphatidic acid. It is a glycerophospholipid in which a phosphate moiety occupies a glycerol substitution site. As is the case with diacylglycerols, phosphatidic acids can have many different combinations of fatty acids of varying lengths and saturation attached at the C-1 and C-2 positions. Fatty acids containing 16, 18 and 20 carbons are the most common. PA(i-21:0/a-21:0), in particular, consists of one chain of isoheneicosanoic acid at the C-1 position and one chain of anteisoheneicosanoic acid at the C-2 position. Phosphatidic acids are quite rare but are extremely important as intermediates in the biosynthesis of triacylglycerols and phospholipids. |
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| Structure | [H][C@@](COC(=O)CCCCCCCCCCCCCCCCCC(C)C)(COP(O)(O)=O)OC(=O)CCCCCCCCCCCCCCCCC(C)CC InChI=1S/C45H89O8P/c1-5-42(4)36-32-28-24-20-16-12-9-10-14-18-22-26-30-34-38-45(47)53-43(40-52-54(48,49)50)39-51-44(46)37-33-29-25-21-17-13-8-6-7-11-15-19-23-27-31-35-41(2)3/h41-43H,5-40H2,1-4H3,(H2,48,49,50)/t42?,43-/m1/s1 |
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| Synonyms | | Value | Source |
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| 1-Isoheneicosanoyl-2-anteisoheneicosanoyl-sn-glycero-3-phosphate | HMDB | | 1-Isoheneicosanoyl-2-anteisoheneicosanoyl-sn-phosphatidic acid | HMDB | | PA(42:0) | HMDB | | Phosphatidic acid(i-21:0/a-21:0) | HMDB | | Phosphatidic acid(42:0) | HMDB | | Phosphatidate(I-21:0/A-21:0) | HMDB | | Phosphatidate(42:0) | HMDB | | [(2R)-2-[(18-Methylicosanoyl)oxy]-3-[(19-methylicosanoyl)oxy]propoxy]phosphonate | HMDB | | PA(i-21:0/a-21:0) | SMPDB |
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| Chemical Formula | C45H89O8P |
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| Average Molecular Weight | 789.173 |
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| Monoisotopic Molecular Weight | 788.629506824 |
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| IUPAC Name | [(2R)-2-[(18-methylicosanoyl)oxy]-3-[(19-methylicosanoyl)oxy]propoxy]phosphonic acid |
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| Traditional Name | (2R)-2-[(18-methylicosanoyl)oxy]-3-[(19-methylicosanoyl)oxy]propoxyphosphonic acid |
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| CAS Registry Number | Not Available |
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| SMILES | [H][C@@](COC(=O)CCCCCCCCCCCCCCCCCC(C)C)(COP(O)(O)=O)OC(=O)CCCCCCCCCCCCCCCCC(C)CC |
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| InChI Identifier | InChI=1S/C45H89O8P/c1-5-42(4)36-32-28-24-20-16-12-9-10-14-18-22-26-30-34-38-45(47)53-43(40-52-54(48,49)50)39-51-44(46)37-33-29-25-21-17-13-8-6-7-11-15-19-23-27-31-35-41(2)3/h41-43H,5-40H2,1-4H3,(H2,48,49,50)/t42?,43-/m1/s1 |
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| InChI Key | PSDJHTOALMPPJI-XFCPCMSTSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as 1,2-diacylglycerol-3-phosphates. These are glycerol-3-phosphates in which the glycerol moiety is bonded to two aliphatic chains through ester linkages. |
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| Kingdom | Organic compounds |
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| Super Class | Lipids and lipid-like molecules |
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| Class | Glycerophospholipids |
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| Sub Class | Glycerophosphates |
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| Direct Parent | 1,2-diacylglycerol-3-phosphates |
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| Alternative Parents | |
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| Substituents | - 1,2-diacylglycerol-3-phosphate
- Fatty acid ester
- Monoalkyl phosphate
- Dicarboxylic acid or derivatives
- Fatty acyl
- Alkyl phosphate
- Phosphoric acid ester
- Organic phosphoric acid derivative
- Carboxylic acid ester
- Carboxylic acid derivative
- Hydrocarbon derivative
- Organic oxide
- Organic oxygen compound
- Carbonyl group
- Organooxygen compound
- Aliphatic acyclic compound
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| Molecular Framework | Aliphatic acyclic compounds |
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| External Descriptors | Not Available |
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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 | Not Available |
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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. | 9.12 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 42.0475 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 2.28 minutes | 32390414 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 5785.1 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 862.7 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 447.1 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 319.8 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 1151.0 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 2104.6 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 | 1878.5 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 150.0 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 4085.0 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 1257.7 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 | 3390.0 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 1561.3 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 841.7 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 860.5 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 926.8 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 | 10.1 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedDerivatized |
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| 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 - PA(i-21:0/a-21:0) 10V, Positive-QTOF | splash10-0bti-1129501500-a39eec4bacbb35ed9bc4 | 2019-02-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-21:0/a-21:0) 20V, Positive-QTOF | splash10-0cdj-3169301100-5b2909f39de3ad21afa9 | 2019-02-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-21:0/a-21:0) 40V, Positive-QTOF | splash10-067i-3289101100-c56274822eccdaa72c67 | 2019-02-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-21:0/a-21:0) 10V, Negative-QTOF | splash10-004i-3009200200-c43bbf6e347a9a3c2d1a | 2019-02-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-21:0/a-21:0) 20V, Negative-QTOF | splash10-004i-9005000000-90633309f36ac4868f93 | 2019-02-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-21:0/a-21:0) 40V, Negative-QTOF | splash10-004i-9001000000-413039a78e27b3fc9eef | 2019-02-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-21:0/a-21:0) 10V, Positive-QTOF | splash10-00dr-0000000900-9fbd16277de0e21d40b0 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-21:0/a-21:0) 20V, Positive-QTOF | splash10-000l-0000005900-d61561e8b64a7e52d6f4 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-21:0/a-21:0) 40V, Positive-QTOF | splash10-01ox-0000609300-6bf510f20506f11c9167 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-21:0/a-21:0) 10V, Negative-QTOF | splash10-000i-0000000900-0024c253d82103cbfa29 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-21:0/a-21:0) 20V, Negative-QTOF | splash10-01ti-1106700900-914118042015f6ac585e | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-21:0/a-21:0) 40V, Negative-QTOF | splash10-004i-1109300100-c6e5cda33ab35a44daf5 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-21:0/a-21:0) 10V, Positive-QTOF | splash10-03di-0000000090-1fd26cc3cb715a1f8f30 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-21:0/a-21:0) 20V, Positive-QTOF | splash10-03di-0000000990-d119466c39a91d52745f | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-21:0/a-21:0) 40V, Positive-QTOF | splash10-03dr-0000851690-1f80b9f2755ced82aa69 | 2021-09-24 | Wishart Lab | View Spectrum |
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