| Record Information |
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| Version | 5.0 |
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| Status | Detected but not Quantified |
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| Creation Date | 2021-09-11 13:20:49 UTC |
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| Update Date | 2021-09-26 23:07:58 UTC |
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| HMDB ID | HMDB0254160 |
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| Secondary Accession Numbers | None |
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| Metabolite Identification |
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| Common Name | Lopirazepam |
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| Description | Lopirazepam belongs to the class of organic compounds known as pyridodiazepines. These are heterocyclic compounds containing a pyridine fused to a diazepine ring. Pyridine is 6-membered ring consisting of five carbon atoms and a nitrogen atom. Diazepine is a 7-membered ring consisting of five carbon atoms and two nitrogen centers. Based on a literature review very few articles have been published on Lopirazepam. This compound has been identified in human blood as reported by (PMID: 31557052 ). Lopirazepam is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Lopirazepam is part of the human exposome. The exposome can be defined as the collection of all the exposures of an individual in a lifetime and how those exposures relate to health. An individual's exposure begins before birth and includes insults from environmental and occupational sources. |
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| Structure | OC1N=C(C2=CC=CC=C2Cl)C2=C(NC1=O)C=CC(Cl)=N2 InChI=1S/C14H9Cl2N3O2/c15-8-4-2-1-3-7(8)11-12-9(5-6-10(16)18-12)17-13(20)14(21)19-11/h1-6,14,21H,(H,17,20) |
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| Synonyms | | Value | Source |
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| 3-Hydroxy-5-(O-chlorophenyl)-7-chloro-1,2-dihydro-2H-pyrido(3,2-e)-1,4-diazepin-2-one | HMDB | | Lopirazepam, monosodium salt | HMDB |
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| Chemical Formula | C14H9Cl2N3O2 |
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| Average Molecular Weight | 322.15 |
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| Monoisotopic Molecular Weight | 321.0071819 |
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| IUPAC Name | 7-chloro-5-(2-chlorophenyl)-3-hydroxy-1H,2H,3H-pyrido[3,2-e][1,4]diazepin-2-one |
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| Traditional Name | lopirazepam |
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| CAS Registry Number | Not Available |
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| SMILES | OC1N=C(C2=CC=CC=C2Cl)C2=C(NC1=O)C=CC(Cl)=N2 |
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| InChI Identifier | InChI=1S/C14H9Cl2N3O2/c15-8-4-2-1-3-7(8)11-12-9(5-6-10(16)18-12)17-13(20)14(21)19-11/h1-6,14,21H,(H,17,20) |
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| InChI Key | JEJOFYTVMFVKQA-UHFFFAOYSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as pyridodiazepines. These are heterocyclic compounds containing a pyridine fused to a diazepine ring. Pyridine is 6-membered ring consisting of five carbon atoms and a nitrogen atom. Diazepine is a 7-membered ring consisting of five carbon atoms and two nitrogen centers. |
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| Kingdom | Organic compounds |
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| Super Class | Organoheterocyclic compounds |
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| Class | Pyridodiazepines |
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| Sub Class | Not Available |
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| Direct Parent | Pyridodiazepines |
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| Alternative Parents | |
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| Substituents | - Pyrido-para-diazepine
- Alpha-amino acid or derivatives
- 2-halopyridine
- Chlorobenzene
- Halobenzene
- Aryl chloride
- Aryl halide
- Monocyclic benzene moiety
- Benzenoid
- Pyridine
- Heteroaromatic compound
- Carboxamide group
- Ketimine
- Secondary carboxylic acid amide
- Lactam
- Alkanolamine
- Carboxylic acid derivative
- Azacycle
- Organic 1,3-dipolar compound
- Propargyl-type 1,3-dipolar organic compound
- Imine
- Organic oxygen compound
- Organic nitrogen compound
- Hydrocarbon derivative
- Carbonyl group
- Organic oxide
- Organopnictogen compound
- Organooxygen compound
- Organohalogen compound
- Organochloride
- Organonitrogen compound
- Aromatic heteropolycyclic compound
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| Molecular Framework | Aromatic heteropolycyclic 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 | Not Available |
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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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| Predicted by Siyang on May 30, 2022 | 14.7249 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 1.22 minutes | 32390414 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 2351.6 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 445.8 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 159.5 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 264.2 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 235.0 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 576.7 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 | 737.4 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 148.6 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 1306.7 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 483.8 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 | 1410.5 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 406.0 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 432.5 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 433.4 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 202.2 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 | 66.7 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedDerivatized| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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| Lopirazepam,2TMS,isomer #1 | C[Si](C)(C)OC1N=C(C2=CC=CC=C2Cl)C2=NC(Cl)=CC=C2N([Si](C)(C)C)C1=O | 2590.9 | Semi standard non polar | 33892256 | | Lopirazepam,2TMS,isomer #1 | C[Si](C)(C)OC1N=C(C2=CC=CC=C2Cl)C2=NC(Cl)=CC=C2N([Si](C)(C)C)C1=O | 2604.0 | Standard non polar | 33892256 | | Lopirazepam,2TMS,isomer #1 | C[Si](C)(C)OC1N=C(C2=CC=CC=C2Cl)C2=NC(Cl)=CC=C2N([Si](C)(C)C)C1=O | 3803.6 | Standard polar | 33892256 | | Lopirazepam,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OC1N=C(C2=CC=CC=C2Cl)C2=NC(Cl)=CC=C2N([Si](C)(C)C(C)(C)C)C1=O | 2896.8 | Semi standard non polar | 33892256 | | Lopirazepam,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OC1N=C(C2=CC=CC=C2Cl)C2=NC(Cl)=CC=C2N([Si](C)(C)C(C)(C)C)C1=O | 2991.1 | Standard non polar | 33892256 | | Lopirazepam,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OC1N=C(C2=CC=CC=C2Cl)C2=NC(Cl)=CC=C2N([Si](C)(C)C(C)(C)C)C1=O | 3826.1 | 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 - Lopirazepam GC-MS (Non-derivatized) - 70eV, Positive | splash10-00p0-1490000000-a69aef6eba7c95ffe625 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Lopirazepam GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Lopirazepam GC-MS (TMS_1_1) - 70eV, Positive | Not Available | 2021-11-04 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Lopirazepam GC-MS (TMS_1_2) - 70eV, Positive | Not Available | 2021-11-04 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Lopirazepam GC-MS (TBDMS_1_1) - 70eV, Positive | Not Available | 2021-11-04 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Lopirazepam GC-MS (TBDMS_1_2) - 70eV, Positive | Not Available | 2021-11-04 | 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 - Lopirazepam 10V, Positive-QTOF | splash10-00di-0009000000-0d106f16a14561b9e1f9 | 2021-10-12 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Lopirazepam 20V, Positive-QTOF | splash10-00di-0019000000-d0cd1881beb441a6658e | 2021-10-12 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Lopirazepam 40V, Positive-QTOF | splash10-0ftu-0591000000-ff5298d83332c3b00001 | 2021-10-12 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Lopirazepam 10V, Negative-QTOF | splash10-014r-1198000000-4d79951edcdf2442b778 | 2021-10-12 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Lopirazepam 20V, Negative-QTOF | splash10-001i-9134000000-323655d7cc48e39b7171 | 2021-10-12 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Lopirazepam 40V, Negative-QTOF | splash10-001i-9300000000-b2cbe678ffab043fbaef | 2021-10-12 | Wishart Lab | View Spectrum |
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