| 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 06:10:00 UTC |
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| Update Date | 2022-11-30 19:26:21 UTC |
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| HMDB ID | HMDB0115823 |
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| Secondary Accession Numbers | None |
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| Metabolite Identification |
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| Common Name | PA(i-19:0/a-21:0) |
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| Description | PA(i-19:0/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-19:0/a-21:0), in particular, consists of one chain of isononadecanoic 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)CCCCCCCCCCCCCCCC(C)C)(COP(O)(O)=O)OC(=O)CCCCCCCCCCCCCCCCC(C)CC InChI=1S/C43H85O8P/c1-5-40(4)34-30-26-22-18-14-10-6-7-11-16-20-24-28-32-36-43(45)51-41(38-50-52(46,47)48)37-49-42(44)35-31-27-23-19-15-12-8-9-13-17-21-25-29-33-39(2)3/h39-41H,5-38H2,1-4H3,(H2,46,47,48)/t40?,41-/m1/s1 |
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| Synonyms | | Value | Source |
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| 1-Isononadecanoyl-2-anteisoheneicosanoyl-sn-glycero-3-phosphate | HMDB | | 1-Isononadecanoyl-2-anteisoheneicosanoyl-sn-phosphatidic acid | HMDB | | PA(40:0) | HMDB | | Phosphatidic acid(i-19:0/a-21:0) | HMDB | | Phosphatidic acid(40:0) | HMDB | | Phosphatidate(I-19:0/A-21:0) | HMDB | | Phosphatidate(40:0) | HMDB | | [(2R)-2-[(18-Methylicosanoyl)oxy]-3-[(17-methyloctadecanoyl)oxy]propoxy]phosphonate | HMDB | | PA(i-19:0/a-21:0) | SMPDB |
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| Chemical Formula | C43H85O8P |
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| Average Molecular Weight | 761.119 |
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| Monoisotopic Molecular Weight | 760.598206695 |
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| IUPAC Name | [(2R)-2-[(18-methylicosanoyl)oxy]-3-[(17-methyloctadecanoyl)oxy]propoxy]phosphonic acid |
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| Traditional Name | (2R)-2-[(18-methylicosanoyl)oxy]-3-[(17-methyloctadecanoyl)oxy]propoxyphosphonic acid |
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| CAS Registry Number | Not Available |
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| SMILES | [H][C@@](COC(=O)CCCCCCCCCCCCCCCC(C)C)(COP(O)(O)=O)OC(=O)CCCCCCCCCCCCCCCCC(C)CC |
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| InChI Identifier | InChI=1S/C43H85O8P/c1-5-40(4)34-30-26-22-18-14-10-6-7-11-16-20-24-28-32-36-43(45)51-41(38-50-52(46,47)48)37-49-42(44)35-31-27-23-19-15-12-8-9-13-17-21-25-29-33-39(2)3/h39-41H,5-38H2,1-4H3,(H2,46,47,48)/t40?,41-/m1/s1 |
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| InChI Key | OTKVAFVMWIOYLL-PUOOBJKZSA-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. | 9.62 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 39.7287 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 2.27 minutes | 32390414 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 5529.8 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 798.5 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 424.9 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 296.8 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 1099.8 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 2005.1 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 | 1786.8 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 146.5 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 3857.6 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 1208.6 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 | 3238.0 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 1472.5 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 806.4 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 799.3 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 877.3 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 | 9.9 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedDerivatized| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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| PA(i-19:0/a-21:0),1TMS,isomer #1 | CCC(C)CCCCCCCCCCCCCCCCC(=O)O[C@H](COC(=O)CCCCCCCCCCCCCCCC(C)C)COP(=O)(O)O[Si](C)(C)C | 5254.5 | Semi standard non polar | 33892256 | | PA(i-19:0/a-21:0),1TMS,isomer #1 | CCC(C)CCCCCCCCCCCCCCCCC(=O)O[C@H](COC(=O)CCCCCCCCCCCCCCCC(C)C)COP(=O)(O)O[Si](C)(C)C | 4530.2 | Standard non polar | 33892256 | | PA(i-19:0/a-21:0),1TMS,isomer #1 | CCC(C)CCCCCCCCCCCCCCCCC(=O)O[C@H](COC(=O)CCCCCCCCCCCCCCCC(C)C)COP(=O)(O)O[Si](C)(C)C | 6081.2 | Standard polar | 33892256 | | PA(i-19:0/a-21:0),1TBDMS,isomer #1 | CCC(C)CCCCCCCCCCCCCCCCC(=O)O[C@H](COC(=O)CCCCCCCCCCCCCCCC(C)C)COP(=O)(O)O[Si](C)(C)C(C)(C)C | 5472.1 | Semi standard non polar | 33892256 | | PA(i-19:0/a-21:0),1TBDMS,isomer #1 | CCC(C)CCCCCCCCCCCCCCCCC(=O)O[C@H](COC(=O)CCCCCCCCCCCCCCCC(C)C)COP(=O)(O)O[Si](C)(C)C(C)(C)C | 4651.5 | Standard non polar | 33892256 | | PA(i-19:0/a-21:0),1TBDMS,isomer #1 | CCC(C)CCCCCCCCCCCCCCCCC(=O)O[C@H](COC(=O)CCCCCCCCCCCCCCCC(C)C)COP(=O)(O)O[Si](C)(C)C(C)(C)C | 6042.7 | Standard polar | 33892256 |
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| GC-MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Predicted GC-MS | Predicted GC-MS Spectrum - PA(i-19:0/a-21:0) GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-13 | 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 - PA(i-19:0/a-21:0) 10V, Positive-QTOF | splash10-08fr-2189802800-22e976be6c2f15968e39 | 2019-02-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-19:0/a-21:0) 20V, Positive-QTOF | splash10-053j-4296302100-9bc58099b778601ed1b5 | 2019-02-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-19:0/a-21:0) 40V, Positive-QTOF | splash10-0a4r-3295011000-9c60a7ae15853de5c63a | 2019-02-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-19:0/a-21:0) 10V, Negative-QTOF | splash10-004j-4093400300-7c82369c32ec90e2b77a | 2019-02-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-19:0/a-21:0) 20V, Negative-QTOF | splash10-004j-9050000000-8b6baaa2b838d0a2eeb9 | 2019-02-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-19:0/a-21:0) 40V, Negative-QTOF | splash10-004i-9000000000-cfd4618cb5ee62e82ab2 | 2019-02-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-19:0/a-21:0) 10V, Positive-QTOF | splash10-001i-0000000900-4f5e0459a0492f4fda74 | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-19:0/a-21:0) 20V, Positive-QTOF | splash10-0020-0000009900-cac2493083ddc18c5cf0 | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-19:0/a-21:0) 40V, Positive-QTOF | splash10-053i-0000922400-c0ff53d3f482f537f306 | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-19:0/a-21:0) 10V, Positive-QTOF | splash10-01ox-0000000900-db61025fea7f5a1ae0db | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-19:0/a-21:0) 20V, Positive-QTOF | splash10-03di-0000005900-3fb6995bc726a5888b8c | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-19:0/a-21:0) 40V, Positive-QTOF | splash10-03di-0000906200-2c09c31638ac665dfcb4 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-19:0/a-21:0) 10V, Negative-QTOF | splash10-0a4i-0000000900-b46100095c3d3e7fec21 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-19:0/a-21:0) 20V, Negative-QTOF | splash10-06wa-0033900400-06403f49c5a217436f03 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - PA(i-19:0/a-21:0) 40V, Negative-QTOF | splash10-004j-1196600100-179ae83517f8e37df694 | 2021-09-24 | Wishart Lab | View Spectrum |
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