| Record Information |
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| Version | 5.0 |
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| Status | Expected but not Quantified |
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| Creation Date | 2013-06-18 17:42:26 UTC |
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| Update Date | 2021-09-14 15:47:40 UTC |
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| HMDB ID | HMDB0060654 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | Citalopram N-oxide |
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| Description | Citalopram N-oxide belongs to the class of organic compounds known as phenylbutylamines. Phenylbutylamines are compounds containing a phenylbutylamine moiety, which consists of a phenyl group substituted at the fourth carbon by an butan-1-amine. Citalopram is an antidepressant drug of the selective serotonin reuptake inhibitor (SSRI) class. Citalopram N-oxide is a metabolite of citalopram. Citalopram N-oxide is a strong basic compound (based on its pKa). citalopram N-oxide can be biosynthesized from citalopram; which is mediated by the enzyme cytochrome P450 2D6. In humans, citalopram N-oxide is involved in citalopram metabolism pathway. It has U.S. Food and Drug Administration (FDA) approval to treat major depression, and is prescribed off-label for a number of anxiety conditions. |
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| Structure | CN(C)(=O)CCCC1(OCC2=C1C=CC(=C2)C#N)C1=CC=C(F)C=C1 InChI=1S/C20H21FN2O2/c1-23(2,24)11-3-10-20(17-5-7-18(21)8-6-17)19-9-4-15(13-22)12-16(19)14-25-20/h4-9,12H,3,10-11,14H2,1-2H3 |
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| Synonyms | Not Available |
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| Chemical Formula | C20H21FN2O2 |
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| Average Molecular Weight | 340.3913 |
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| Monoisotopic Molecular Weight | 340.158706131 |
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| IUPAC Name | 3-[5-cyano-1-(4-fluorophenyl)-1,3-dihydro-2-benzofuran-1-yl]-N,N-dimethylpropanamine oxide |
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| Traditional Name | citalopram N-oxide |
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| CAS Registry Number | Not Available |
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| SMILES | CN(C)(=O)CCCC1(OCC2=C1C=CC(=C2)C#N)C1=CC=C(F)C=C1 |
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| InChI Identifier | InChI=1S/C20H21FN2O2/c1-23(2,24)11-3-10-20(17-5-7-18(21)8-6-17)19-9-4-15(13-22)12-16(19)14-25-20/h4-9,12H,3,10-11,14H2,1-2H3 |
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| InChI Key | DIOGFDCEWUUSBQ-UHFFFAOYSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as phenylbutylamines. Phenylbutylamines are compounds containing a phenylbutylamine moiety, which consists of a phenyl group substituted at the fourth carbon by an butan-1-amine. |
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| Kingdom | Organic compounds |
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| Super Class | Benzenoids |
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| Class | Benzene and substituted derivatives |
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| Sub Class | Phenylbutylamines |
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| Direct Parent | Phenylbutylamines |
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| Alternative Parents | |
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| Substituents | - Phenylbutylamine
- Isocoumaran
- Fluorobenzene
- Halobenzene
- Aryl fluoride
- Aryl halide
- Trialkyl amine oxide
- N-oxide
- Dialkyl ether
- Ether
- Oxacycle
- Organoheterocyclic compound
- Trisubstituted n-oxide
- Carbonitrile
- Nitrile
- Organic nitrogen compound
- Organohalogen compound
- Organofluoride
- Organonitrogen compound
- Organooxygen compound
- Hydrocarbon derivative
- Organic oxide
- Organopnictogen compound
- Organic oxygen compound
- Aromatic heteropolycyclic compound
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| Molecular Framework | Aromatic heteropolycyclic 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 | Not Available |
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| Physical Properties |
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| State | Not Available |
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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. | 5.41 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 12.5227 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 2.55 minutes | 32390414 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 1590.9 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 241.5 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 192.3 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 190.0 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 121.4 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 523.1 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 | 479.1 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 609.3 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 1337.3 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 379.6 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 | 1494.7 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 251.0 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 358.6 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 369.0 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 361.0 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 | 27.6 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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| Predicted GC-MS | Predicted GC-MS Spectrum - Citalopram N-oxide GC-MS (Non-derivatized) - 70eV, Positive | splash10-000i-1191000000-61350a6a4e7c7ec57461 | 2017-09-20 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Citalopram N-oxide 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 - Citalopram N-oxide 10V, Positive-QTOF | splash10-0006-0029000000-44d92e428209f50b8f52 | 2017-10-06 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Citalopram N-oxide 20V, Positive-QTOF | splash10-001c-4397000000-1ca72d34b2e820c2e98a | 2017-10-06 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Citalopram N-oxide 40V, Positive-QTOF | splash10-00s9-8960000000-f90431365d18605158e6 | 2017-10-06 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Citalopram N-oxide 10V, Negative-QTOF | splash10-000i-0009000000-4fec0d54847fd5c5d7cc | 2017-10-06 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Citalopram N-oxide 20V, Negative-QTOF | splash10-000i-1019000000-19ea08ed4fbf62970754 | 2017-10-06 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Citalopram N-oxide 40V, Negative-QTOF | splash10-000j-4190000000-328d5f705437721a32ee | 2017-10-06 | Wishart Lab | View Spectrum |
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