| Record Information |
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| Version | 5.0 |
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| Status | Expected but not Quantified |
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| Creation Date | 2012-09-06 15:16:51 UTC |
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| Update Date | 2020-02-26 21:41:21 UTC |
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| HMDB ID | HMDB0015305 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | Phenobarbital |
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| Description | Phenobarbital is only found in individuals that have used or taken this drug. It is a barbituric acid derivative that acts as a nonselective central nervous system depressant.Phenobarbital acts on GABAA receptors, increasing synaptic inhibition. This has the effect of elevating seizure threshold and reducing the spread of seizure activity from a seizure focus. Phenobarbital may also inhibit calcium channels, resulting in a decrease in excitatory transmitter release. The sedative-hypnotic effects of phenobarbital are likely the result of its effect on the polysynaptic midbrain reticular formation, which controls CNS arousal. |
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| Structure | CCC1(C(=O)NC(=O)NC1=O)C1=CC=CC=C1 InChI=1S/C12H12N2O3/c1-2-12(8-6-4-3-5-7-8)9(15)13-11(17)14-10(12)16/h3-7H,2H2,1H3,(H2,13,14,15,16,17) |
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| Synonyms | | Value | Source |
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| 5-Ethyl-5-phenyl-2,4,6(1H,3H,5H)-pyrimidinetrione | ChEBI | | 5-Ethyl-5-phenyl-pyrimidine-2,4,6-trione | ChEBI | | 5-Ethyl-5-phenylbarbituric acid | ChEBI | | 5-Ethyl-5-phenylpyrimidine-2,4,6(1H,3H,5H)-trione | ChEBI | | 5-Phenyl-5-ethylbarbituric acid | ChEBI | | Luminal | ChEBI | | Phenobarbitol | ChEBI | | Phenobarbitone | ChEBI | | Phenobarbituric acid | ChEBI | | Phenylaethylbarbitursaeure | ChEBI | | Phenylethylbarbiturate | ChEBI | | Phenylethylbarbituric acid | ChEBI | | Phenylethylbarbitursaeure | ChEBI | | PHENYLETHYLMALONYLUREA | ChEBI | | 5-Ethyl-5-phenylbarbitate | Generator | | 5-Ethyl-5-phenylbarbitic acid | Generator | | 5-Phenyl-5-ethylbarbitate | Generator | | 5-Phenyl-5-ethylbarbitic acid | Generator | | Phenobarbitate | Generator | | Phenobarbitic acid | Generator | | Phenylethylbarbitate | Generator | | Phenylethylbarbitic acid | Generator | | Fenobarbital | HMDB | | Acid, phenylethylbarbituric | HMDB | | Phenylbarbital | HMDB | | Phenobarbital sodium | HMDB | | Phenobarbital, monosodium salt | HMDB | | Gardenal | HMDB | | Hysteps | HMDB | | Monosodium salt phenobarbital | HMDB | | Sodium, phenobarbital | HMDB | | Phenemal | HMDB |
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| Chemical Formula | C12H12N2O3 |
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| Average Molecular Weight | 232.2353 |
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| Monoisotopic Molecular Weight | 232.08479226 |
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| IUPAC Name | 5-ethyl-5-phenyl-1,3-diazinane-2,4,6-trione |
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| Traditional Name | phenobarbital |
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| CAS Registry Number | 50-06-6 |
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| SMILES | CCC1(C(=O)NC(=O)NC1=O)C1=CC=CC=C1 |
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| InChI Identifier | InChI=1S/C12H12N2O3/c1-2-12(8-6-4-3-5-7-8)9(15)13-11(17)14-10(12)16/h3-7H,2H2,1H3,(H2,13,14,15,16,17) |
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| InChI Key | DDBREPKUVSBGFI-UHFFFAOYSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as barbituric acid derivatives. Barbituric acid derivatives are compounds containing a perhydropyrimidine ring substituted at C-2, -4 and -6 by oxo groups. |
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| Kingdom | Organic compounds |
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| Super Class | Organoheterocyclic compounds |
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| Class | Diazines |
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| Sub Class | Pyrimidines and pyrimidine derivatives |
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| Direct Parent | Barbituric acid derivatives |
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| Alternative Parents | |
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| Substituents | - Barbiturate
- Ureide
- N-acyl urea
- Monocyclic benzene moiety
- 1,3-diazinane
- Benzenoid
- Dicarboximide
- Urea
- Carbonic acid derivative
- Carboxylic acid derivative
- Azacycle
- Organic nitrogen compound
- Organonitrogen compound
- Organooxygen compound
- Hydrocarbon derivative
- Organic oxide
- Organopnictogen compound
- Carbonyl group
- Organic oxygen compound
- Aromatic heteromonocyclic compound
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| Molecular Framework | Aromatic heteromonocyclic 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 | Not Available |
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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 | 174 °C | Not Available | | Boiling Point | Not Available | Not Available | | Water Solubility | 0.28 g/L | Not Available | | LogP | 1.47 | HANSCH,C ET AL. (1995) |
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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. | 5.6 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 13.9909 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 1.82 minutes | 32390414 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 2343.7 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 428.6 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 159.0 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 245.3 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 198.3 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 509.8 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 | 739.2 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 77.0 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 1183.4 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 460.0 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 | 1443.0 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 337.2 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 377.0 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 387.3 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 226.4 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 | 53.0 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedDerivatized| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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| Phenobarbital,1TMS,isomer #1 | CCC1(C2=CC=CC=C2)C(=O)NC(=O)N([Si](C)(C)C)C1=O | 1880.7 | Semi standard non polar | 33892256 | | Phenobarbital,1TMS,isomer #1 | CCC1(C2=CC=CC=C2)C(=O)NC(=O)N([Si](C)(C)C)C1=O | 2074.1 | Standard non polar | 33892256 | | Phenobarbital,1TMS,isomer #1 | CCC1(C2=CC=CC=C2)C(=O)NC(=O)N([Si](C)(C)C)C1=O | 2938.0 | Standard polar | 33892256 | | Phenobarbital,2TMS,isomer #1 | CCC1(C2=CC=CC=C2)C(=O)N([Si](C)(C)C)C(=O)N([Si](C)(C)C)C1=O | 1796.9 | Semi standard non polar | 33892256 | | Phenobarbital,2TMS,isomer #1 | CCC1(C2=CC=CC=C2)C(=O)N([Si](C)(C)C)C(=O)N([Si](C)(C)C)C1=O | 2092.7 | Standard non polar | 33892256 | | Phenobarbital,2TMS,isomer #1 | CCC1(C2=CC=CC=C2)C(=O)N([Si](C)(C)C)C(=O)N([Si](C)(C)C)C1=O | 2568.9 | Standard polar | 33892256 | | Phenobarbital,1TBDMS,isomer #1 | CCC1(C2=CC=CC=C2)C(=O)NC(=O)N([Si](C)(C)C(C)(C)C)C1=O | 2141.2 | Semi standard non polar | 33892256 | | Phenobarbital,1TBDMS,isomer #1 | CCC1(C2=CC=CC=C2)C(=O)NC(=O)N([Si](C)(C)C(C)(C)C)C1=O | 2297.4 | Standard non polar | 33892256 | | Phenobarbital,1TBDMS,isomer #1 | CCC1(C2=CC=CC=C2)C(=O)NC(=O)N([Si](C)(C)C(C)(C)C)C1=O | 2996.1 | Standard polar | 33892256 | | Phenobarbital,2TBDMS,isomer #1 | CCC1(C2=CC=CC=C2)C(=O)N([Si](C)(C)C(C)(C)C)C(=O)N([Si](C)(C)C(C)(C)C)C1=O | 2302.6 | Semi standard non polar | 33892256 | | Phenobarbital,2TBDMS,isomer #1 | CCC1(C2=CC=CC=C2)C(=O)N([Si](C)(C)C(C)(C)C)C(=O)N([Si](C)(C)C(C)(C)C)C1=O | 2538.3 | Standard non polar | 33892256 | | Phenobarbital,2TBDMS,isomer #1 | CCC1(C2=CC=CC=C2)C(=O)N([Si](C)(C)C(C)(C)C)C(=O)N([Si](C)(C)C(C)(C)C)C1=O | 2723.5 | Standard polar | 33892256 |
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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 - Phenobarbital EI-B (Non-derivatized) | splash10-0udi-5970000000-7bda34bd3bb88b5fd9fd | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | | Experimental GC-MS | GC-MS Spectrum - Phenobarbital CI-B (Non-derivatized) | splash10-001i-0090000000-55265fc1e12027dc6454 | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | | Experimental GC-MS | GC-MS Spectrum - Phenobarbital EI-B (Non-derivatized) | splash10-0udi-5970000000-7bda34bd3bb88b5fd9fd | 2018-05-18 | HMDB team, MONA, MassBank | View Spectrum | | Experimental GC-MS | GC-MS Spectrum - Phenobarbital CI-B (Non-derivatized) | splash10-001i-0090000000-55265fc1e12027dc6454 | 2018-05-18 | HMDB team, MONA, MassBank | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Phenobarbital GC-MS (Non-derivatized) - 70eV, Positive | splash10-014i-1940000000-8377cca722b6479ce2fd | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Phenobarbital GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | | MS | Mass Spectrum (Electron Ionization) | splash10-0uxr-6950000000-193bf296d3e5d1705628 | 2014-09-20 | Not Available | View Spectrum |
MS/MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital LC-ESI-QFT , negative-QTOF | splash10-001i-0190000000-8cf53cd66a890256ea98 | 2017-09-14 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital LC-ESI-QFT , negative-QTOF | splash10-001i-1290000000-73d0e0b25f99ffc6a500 | 2017-09-14 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital LC-ESI-QFT , negative-QTOF | splash10-0016-3950000000-ab62a9483b8a2a65b563 | 2017-09-14 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital LC-ESI-QFT , negative-QTOF | splash10-0006-0900000000-4121e8dd703c01c1161c | 2017-09-14 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital LC-ESI-QFT , negative-QTOF | splash10-0006-0900000000-4976dfc244184e5d627b | 2017-09-14 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital LC-ESI-QFT , positive-QTOF | splash10-001i-1890000000-a12eb2be0b05b9f234de | 2017-09-14 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital LC-ESI-QFT , positive-QTOF | splash10-03di-1920000000-43ed71cd16bfceef49e6 | 2017-09-14 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital LC-ESI-QFT , positive-QTOF | splash10-08fr-2900000000-236ae1dab83b15539a86 | 2017-09-14 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital LC-ESI-QFT , positive-QTOF | splash10-053u-3900000000-2a994f0e45c022cca640 | 2017-09-14 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital LC-ESI-QFT , positive-QTOF | splash10-053u-4900000000-066a53ca113150f58406 | 2017-09-14 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital LC-ESI-QFT , positive-QTOF | splash10-05o3-6900000000-b8f9c9d0f71b6d2c6c2f | 2017-09-14 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital LC-ESI-QFT , positive-QTOF | splash10-0uy3-8900000000-6bcd457bfff85f05fe9c | 2017-09-14 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital LC-ESI-QFT , positive-QTOF | splash10-0udi-9500000000-0ecfff7e43e9e78d677e | 2017-09-14 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital LC-ESI-QFT , positive-QTOF | splash10-0uxs-9300000000-7413ad1c764a1ae4a98e | 2017-09-14 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital 75V, Negative-QTOF | splash10-0006-0900000000-4976dfc244184e5d627b | 2021-09-20 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital 45V, Negative-QTOF | splash10-0016-3950000000-ab62a9483b8a2a65b563 | 2021-09-20 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital 60V, Negative-QTOF | splash10-0006-0900000000-4121e8dd703c01c1161c | 2021-09-20 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital 120V, Positive-QTOF | splash10-0uy3-8900000000-741b028c01a0bfefd003 | 2021-09-20 | HMDB team, MONA | View Spectrum | | Experimental LC-MS/MS | LC-MS/MS Spectrum - Phenobarbital 15V, Positive-QTOF | splash10-001i-0790000000-ab8562b536e84297ce37 | 2021-09-20 | HMDB team, MONA | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phenobarbital 10V, Positive-QTOF | splash10-001i-0190000000-f722d696dc84bd92f7d2 | 2016-08-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phenobarbital 20V, Positive-QTOF | splash10-03xr-0910000000-d76f47fd3df15d7ea214 | 2016-08-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phenobarbital 40V, Positive-QTOF | splash10-014l-8910000000-29ca3dd7066d66bd0412 | 2016-08-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phenobarbital 10V, Negative-QTOF | splash10-0016-9670000000-ddcdac3a0cb816b2307c | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phenobarbital 20V, Negative-QTOF | splash10-0006-9610000000-315a80c916d24f8b59e8 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Phenobarbital 40V, Negative-QTOF | splash10-000x-9700000000-e2564ed7f0e6acd73e7b | 2016-08-03 | Wishart Lab | View Spectrum |
NMR Spectra| Spectrum Type | Description | Deposition Date | Source | View |
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