Record Information |
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Version | 1.0 |
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Creation date | 2010-04-08 22:07:17 UTC |
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Update date | 2020-09-17 15:42:26 UTC |
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Primary ID | FDB006738 |
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Secondary Accession Numbers | Not Available |
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Chemical Information |
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FooDB Name | Psidiolic acid |
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Description | Pyroglutamic acid (5-oxoproline) is a cyclized derivative of L-glutamic acid. It is an uncommon amino acid derivative in which the free amino group of glutamic acid cyclizes to form a lactam. It is formed nonenzymatically from glutamate, glutamine, and gamma-glutamylated peptides, but it can also be produced by the action of gamma-glutamylcyclotransferase on gamma-glutamyl dipeptides. Elevated blood levels of pyroglutamate may be associated with problems of glutamine or glutathione metabolism. Pyroglutamate is found in substantial amounts in brain tissue and other tissues in bound form, especially skin. It is also present in plant tissues. It is sold, over the counter, as a "smart drug" for improving blood circulation in the brain. Pyroglutamate in the urine is a biomarker for the consumption of cheese. When present in sufficiently high levels, pyroglutamic acid can act as an acidogen and a metabotoxin. An acidogen is an acidic compound that induces acidosis, which has multiple adverse effects on many organ systems. A metabotoxin is an endogenously produced metabolite that causes adverse health effects at chronically high levels. Chronically high levels of pyroglutamic acid are associated with at least five inborn errors of metabolism including 5-oxoprolinuria, 5-oxoprolinase deficiency, glutathione synthetase deficiency, hawkinsinuria, and propionic acidemia. Pyroglutamic acid is an organic acid. It is an extremely weak basic (essentially neutral) compound (based on its pKa). Abnormally high levels of organic acids in the blood (organic acidemia), urine (organic aciduria), the brain, and other tissues lead to general metabolic acidosis. Acidosis typically occurs when arterial pH falls below 7.35. In infants with acidosis, the initial symptoms include poor feeding, vomiting, loss of appetite, weak muscle tone (hypotonia), and lack of energy (lethargy). These can progress to heart, liver, and kidney abnormalities, seizures, coma, and possibly death. These are also the characteristic symptoms of the untreated IEMs mentioned above. Many affected children with organic acidemias experience intellectual disability or delayed development. In adults, acidosis or acidemia is characterized by headaches, confusion, feeling tired, tremors, sleepiness, and seizures. It has been shown that pyroglutamic acid releases GABA from the cerebral cortex and displays anti-anxiety effects in a simple approach-avoidance conflict situation in the rat. In clinical pharmacology experiments, pyroglutamic acid significantly shortens the plasma half-life of ethanol during acute intoxication. |
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CAS Number | 98-79-3 |
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Structure | |
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Synonyms | |
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Predicted Properties | |
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Chemical Formula | C5H7NO3 |
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IUPAC name | (2S)-5-oxopyrrolidine-2-carboxylic acid |
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InChI Identifier | InChI=1S/C5H7NO3/c7-4-2-1-3(6-4)5(8)9/h3H,1-2H2,(H,6,7)(H,8,9)/t3-/m0/s1 |
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InChI Key | ODHCTXKNWHHXJC-VKHMYHEASA-N |
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Isomeric SMILES | OC(=O)[C@@H]1CCC(=O)N1 |
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Average Molecular Weight | 129.114 |
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Monoisotopic Molecular Weight | 129.042593095 |
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Classification |
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Description | Belongs to the class of organic compounds known as alpha amino acids and derivatives. These are amino acids in which the amino group is attached to the carbon atom immediately adjacent to the carboxylate group (alpha carbon), or a derivative thereof. |
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Kingdom | Organic compounds |
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Super Class | Organic acids and derivatives |
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Class | Carboxylic acids and derivatives |
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Sub Class | Amino acids, peptides, and analogues |
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Direct Parent | Alpha amino acids and derivatives |
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Alternative Parents | |
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Substituents | - Alpha-amino acid or derivatives
- Pyrroline carboxylic acid
- Pyrroline carboxylic acid or derivatives
- Pyrroline
- Cyclic carboximidic acid
- Lactim
- Carboxylic acid
- Monocarboxylic acid or derivatives
- Propargyl-type 1,3-dipolar organic compound
- Organic 1,3-dipolar compound
- Azacycle
- Organoheterocyclic compound
- Organopnictogen compound
- Organic oxygen compound
- Organooxygen compound
- Organic oxide
- Hydrocarbon derivative
- Carbonyl group
- Organic nitrogen compound
- Organonitrogen compound
- Aliphatic heteromonocyclic compound
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Molecular Framework | Aliphatic heteromonocyclic compounds |
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External Descriptors | |
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Ontology |
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Physiological effect | Health effect: |
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Disposition | Route of exposure: Source: Biological location: |
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Role | Indirect biological role: Industrial application: Biological role: |
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Physico-Chemical Properties |
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Physico-Chemical Properties - Experimental | |
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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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EI-MS | Mass Spectrum (Electron Ionization) | splash10-001i-9000000000-6c87253da642bb4800df | 2019-05-16 | View Spectrum | GC-MS | Psidiolic acid, 2 TMS, GC-MS Spectrum | splash10-0ab9-8900000000-f79dc90370ba38f587c9 | Spectrum | GC-MS | Psidiolic acid, non-derivatized, GC-MS Spectrum | splash10-0ab9-8900000000-f79dc90370ba38f587c9 | Spectrum | GC-MS | Psidiolic acid, non-derivatized, GC-MS Spectrum | splash10-0a4i-0900000000-90fb43273551aeb9b2c4 | Spectrum | Predicted GC-MS | Psidiolic acid, non-derivatized, Predicted GC-MS Spectrum - 70eV, Positive | splash10-0a6r-9000000000-130a8f31f82e83c4be07 | Spectrum | Predicted GC-MS | Psidiolic acid, 1 TMS, Predicted GC-MS Spectrum - 70eV, Positive | splash10-05fr-9200000000-d69b52257404ab658d5b | Spectrum | Predicted GC-MS | Psidiolic acid, non-derivatized, Predicted GC-MS Spectrum - 70eV, Positive | Not Available | Spectrum | Predicted GC-MS | Psidiolic acid, TMS_1_2, Predicted GC-MS Spectrum - 70eV, Positive | Not Available | Spectrum | Predicted GC-MS | Psidiolic acid, TBDMS_1_1, Predicted GC-MS Spectrum - 70eV, Positive | Not Available | Spectrum | Predicted GC-MS | Psidiolic acid, TBDMS_1_2, Predicted GC-MS Spectrum - 70eV, Positive | Not Available | Spectrum |
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MS/MS | Type | Description | Splash Key | View |
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MS/MS | LC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated) | splash10-001i-9500000000-ebc64308ec5d5bdb303e | 2012-07-24 | View Spectrum | MS/MS | LC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated) | splash10-053r-9000000000-7377cb17491942e9589c | 2012-07-24 | View Spectrum | MS/MS | LC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated) | splash10-053u-9000000000-fcab1396867356ebd6ae | 2012-07-24 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negative | splash10-004i-0900000000-5b0c6536e1b3217b8544 | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negative | splash10-004i-0900000000-c30ac0bd264c8007ef92 | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negative | splash10-004i-5900000000-ea3a164653e4235716ae | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Negative | splash10-0f89-9000000000-f6620738e68f990d0594 | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Negative | splash10-0udi-9000000000-7937bee2e9a6d6b29cbd | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negative | splash10-004i-0900000000-f20401903b234914b936 | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negative | splash10-004i-0900000000-9446bb65e0edd72cfd59 | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negative | splash10-0059-7900000000-74eccdeb9f0d5fd17614 | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Negative | splash10-0f8a-9000000000-8786a9cd5e488192f34d | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Negative | splash10-0f6t-9000000000-ebcc1ac4acd525218e80 | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Positive | splash10-01q9-2900000000-754ae9b699ec1b22cd76 | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Positive | splash10-001i-9300000000-eabb8c4dc0d1111e0431 | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Positive | splash10-00lr-9100000000-1dd17702aee7e5bce618 | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Positive | splash10-067i-9000000000-c9669794d3a8746be498 | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Positive | splash10-014i-9000000000-9e103abb0a6ed890051e | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Positive | splash10-03e9-3900000000-da8cf252285c1d616586 | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Positive | splash10-01q9-9400000000-96a7fe5a81188c49d1ba | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Positive | splash10-014i-9000000000-356215339a43217dea66 | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Positive | splash10-02vl-9000000000-ed47ec6e675eb338da19 | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Positive | splash10-014i-9000000000-f647da344adbdf7bfb1b | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QTOF (UPLC Q-Tof Premier, Waters) , Positive | splash10-001i-9200000000-0bddc68d58c6fb981d1a | 2012-08-31 | View Spectrum | MS/MS | LC-MS/MS Spectrum - LC-ESI-QTOF (UPLC Q-Tof Premier, Waters) , Negative | splash10-004i-0900000000-c70c79fa828bbf137ebc | 2012-08-31 | View Spectrum |
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NMR | Type | Description | | View |
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1D NMR | 1H NMR Spectrum (1D, 600 MHz, H2O, experimental) | | Spectrum | 1D NMR | 13C NMR Spectrum (1D, 100 MHz, D2O, predicted) | | Spectrum | 1D NMR | 1H NMR Spectrum (1D, 100 MHz, D2O, predicted) | | Spectrum | 1D NMR | 13C NMR Spectrum (1D, 1000 MHz, D2O, predicted) | | Spectrum | 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, D2O, predicted) | | Spectrum | 1D NMR | 13C NMR Spectrum (1D, 200 MHz, D2O, predicted) | | Spectrum | 1D NMR | 1H NMR Spectrum (1D, 200 MHz, D2O, predicted) | | Spectrum | 1D NMR | 13C NMR Spectrum (1D, 300 MHz, D2O, predicted) | | Spectrum | 1D NMR | 1H NMR Spectrum (1D, 300 MHz, D2O, predicted) | | Spectrum | 1D NMR | 13C NMR Spectrum (1D, 400 MHz, D2O, predicted) | | Spectrum | 1D NMR | 1H NMR Spectrum (1D, 400 MHz, D2O, predicted) | | Spectrum | 1D NMR | 13C NMR Spectrum (1D, 500 MHz, D2O, predicted) | | Spectrum | 1D NMR | 1H NMR Spectrum (1D, 500 MHz, D2O, predicted) | | Spectrum | 1D NMR | 13C NMR Spectrum (1D, 600 MHz, D2O, predicted) | | Spectrum | 1D NMR | 1H NMR Spectrum (1D, 600 MHz, D2O, predicted) | | Spectrum | 1D NMR | 13C NMR Spectrum (1D, 700 MHz, D2O, predicted) | | Spectrum | 1D NMR | 1H NMR Spectrum (1D, 700 MHz, D2O, predicted) | | Spectrum | 1D NMR | 13C NMR Spectrum (1D, 800 MHz, D2O, predicted) | | Spectrum | 1D NMR | 1H NMR Spectrum (1D, 800 MHz, D2O, predicted) | | Spectrum | 1D NMR | 13C NMR Spectrum (1D, 900 MHz, D2O, predicted) | | Spectrum | 1D NMR | 1H NMR Spectrum (1D, 900 MHz, D2O, predicted) | | Spectrum | 2D NMR | [1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental) | | Spectrum |
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External Links |
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ChemSpider ID | Not Available |
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ChEMBL ID | Not Available |
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KEGG Compound ID | Not Available |
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Pubchem Compound ID | Not Available |
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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 | Not Available |
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EAFUS ID | Not Available |
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Dr. Duke ID | PSIDIOLIC-ACID |
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BIGG ID | Not Available |
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KNApSAcK ID | Not Available |
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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 | Not Available |
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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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Biological Effects and Interactions |
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Health Effects / Bioactivities | Not Available |
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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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