| Record Information |
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| Version | 5.0 |
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| Status | Detected but not Quantified |
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| Creation Date | 2008-10-02 13:30:03 UTC |
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| Update Date | 2023-02-21 17:17:24 UTC |
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| HMDB ID | HMDB0010715 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | 2-Phenylacetamide |
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| Description | 2-Phenylacetamide, also known as alpha-toluamide or benzeneacetamide, belongs to the class of organic compounds known as phenylacetamides. These are amide derivatives of phenylacetic acids. Pure crystals are plate shaped and colorless to white. 2-Phenylacetamide is an extremely weak basic (essentially neutral) compound (based on its pKa). 2-Phenylacetamide exists in all living organisms, ranging from bacteria to humans. But its (apparent) unacceptable toxic effects, the most alarming being cyanosis due to methemoglobinemia and ultimately liver and kidney damage, prompted the search for supposedly less toxic aniline derivatives such as phenacetin. Acetanilide is slightly soluble in water, and stable under most conditions. Acetanilide can be produced by reacting acetic anhydride with aniline:C6H5NH2 + (CH3CO)2O → C6H5NHCOCH3 + CH3COOHThe preparation used to be a traditional experiment in introductory organic chemistry lab classes, but it has now been widely replaced by the preparation of either paracetamol or aspirin, both of which teach the same practical techniques (especially recrystallization of the product) but which avoid the use of aniline, a suspected carcinogen. It is also a precursor in the synthesis of penicillin and other pharmaceuticals. Acetanilide is no longer used as a drug in its own right, although the success of its metabolite – paracetamol (acetaminophen) – is well known (although it is itself toxic in excessive amounts). After several conflicting results over the ensuing fifty years, it was established in 1948 that acetanilide was mostly metabolized to paracetamol (acetaminophen) in the human body, and that it was this metabolite that was responsible for the analgesic and antipyretic properties. In the 19th century acetanilide was one of a large number of compounds used as experimental photographic developers. Acetanilide is used as an inhibitor of hydrogen peroxide decomposition and is used to stabilize cellulose ester varnishes. Acetanilide is an odourless solid chemical of leaf or flake-like appearance. It has also found uses in the intermediation in rubber accelerator synthesis, dyes and dye intermediate synthesis, and camphor synthesis. |
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| Structure | InChI=1S/C8H9NO/c9-8(10)6-7-4-2-1-3-5-7/h1-5H,6H2,(H2,9,10) |
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| Synonyms | | Value | Source |
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| alpha-Phenylacetamide | Kegg | | a-Phenylacetamide | Generator | | Α-phenylacetamide | Generator | | alpha-Toluamide | HMDB | | Benzeneacetamide | HMDB | | Phenyl-beta-acetylamine | HMDB | | Phenylacetamide | HMDB | | Phenylacetic acid amide | HMDB | | a-Toluamide | HMDB | | Α-toluamide | HMDB | | Phenyl-b-acetylamine | HMDB | | Phenyl-β-acetylamine | HMDB | | Phenylacetate amide | HMDB | | (alpha-)2-Phenylacetamide | HMDB | | 2-Phenyl-acetamide | HMDB | | alpha-Toluimidic acid | HMDB | | beta-Phenyl-acetylamine | HMDB |
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| Chemical Formula | C8H9NO |
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| Average Molecular Weight | 135.1632 |
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| Monoisotopic Molecular Weight | 135.068413915 |
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| IUPAC Name | 2-phenylacetamide |
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| Traditional Name | phenylacetamide |
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| CAS Registry Number | 103-81-1 |
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| SMILES | NC(=O)CC1=CC=CC=C1 |
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| InChI Identifier | InChI=1S/C8H9NO/c9-8(10)6-7-4-2-1-3-5-7/h1-5H,6H2,(H2,9,10) |
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| InChI Key | LSBDFXRDZJMBSC-UHFFFAOYSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as phenylacetamides. These are amide derivatives of phenylacetic acids. |
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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 | Phenylacetamides |
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| Direct Parent | Phenylacetamides |
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| Alternative Parents | |
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| Substituents | - Phenylacetamide
- Primary carboxylic acid amide
- Carboxamide group
- Carboxylic acid derivative
- Organic nitrogen compound
- Organic oxygen compound
- Organopnictogen compound
- Organic oxide
- Hydrocarbon derivative
- Organooxygen compound
- Organonitrogen compound
- Carbonyl group
- Aromatic homomonocyclic compound
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| Molecular Framework | Aromatic homomonocyclic compounds |
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| External Descriptors | |
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| Ontology |
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| Physiological effect | |
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| Disposition | |
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| Process | |
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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. | 3.18 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 10.5082 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 1.87 minutes | 32390414 | | AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 60.3 seconds | 40023050 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 1262.5 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 370.1 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 126.8 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 224.3 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 117.2 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 342.3 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 | 355.9 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 257.3 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 872.4 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 314.5 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 | 943.6 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 247.2 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 275.8 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 387.4 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 299.9 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 | 84.4 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedDerivatized| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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| 2-Phenylacetamide,1TMS,isomer #1 | C[Si](C)(C)NC(=O)CC1=CC=CC=C1 | 1447.5 | Semi standard non polar | 33892256 | | 2-Phenylacetamide,1TMS,isomer #1 | C[Si](C)(C)NC(=O)CC1=CC=CC=C1 | 1425.7 | Standard non polar | 33892256 | | 2-Phenylacetamide,1TMS,isomer #1 | C[Si](C)(C)NC(=O)CC1=CC=CC=C1 | 1820.2 | Standard polar | 33892256 | | 2-Phenylacetamide,2TMS,isomer #1 | C[Si](C)(C)N(C(=O)CC1=CC=CC=C1)[Si](C)(C)C | 1558.3 | Semi standard non polar | 33892256 | | 2-Phenylacetamide,2TMS,isomer #1 | C[Si](C)(C)N(C(=O)CC1=CC=CC=C1)[Si](C)(C)C | 1597.7 | Standard non polar | 33892256 | | 2-Phenylacetamide,2TMS,isomer #1 | C[Si](C)(C)N(C(=O)CC1=CC=CC=C1)[Si](C)(C)C | 1791.5 | Standard polar | 33892256 | | 2-Phenylacetamide,1TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)NC(=O)CC1=CC=CC=C1 | 1666.9 | Semi standard non polar | 33892256 | | 2-Phenylacetamide,1TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)NC(=O)CC1=CC=CC=C1 | 1643.9 | Standard non polar | 33892256 | | 2-Phenylacetamide,1TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)NC(=O)CC1=CC=CC=C1 | 1948.7 | Standard polar | 33892256 | | 2-Phenylacetamide,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)N(C(=O)CC1=CC=CC=C1)[Si](C)(C)C(C)(C)C | 1987.2 | Semi standard non polar | 33892256 | | 2-Phenylacetamide,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)N(C(=O)CC1=CC=CC=C1)[Si](C)(C)C(C)(C)C | 2023.6 | Standard non polar | 33892256 | | 2-Phenylacetamide,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)N(C(=O)CC1=CC=CC=C1)[Si](C)(C)C(C)(C)C | 2002.7 | Standard polar | 33892256 |
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