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Record Information
StatusExpected but not Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2020-02-26 21:23:06 UTC
Secondary Accession Numbers
  • HMDB01250
Metabolite Identification
Common NameN-Acetylarylamine
DescriptionN-Acetylarylamine is an odourless solid chemical of leaf or flake-like appearance. It is also known as acetanilide, N-phenylacetamide, acetanil, or acetanilid, and was formerly known by the trade name Antifebrin. N-Acetylarylamine has analgesic and fever-reducing properties; it is in the same class of drugs as acetaminophen (paracetamol). Under the name acetanilid it formerly figured in the formula of a number of patent medicines and over the counter drugs. In 1948, Julius Axelrod and Bernard Brodie discovered that acetanilide is much more toxic in these applications than other drugs, causing methemoglobinemia and ultimately doing damage to the liver and kidneys. As such, acetanilide has largely been replaced by less toxic drugs, in particular acetaminophen, which is a metabolite of acetanilide and whose use Axelrod and Brodie suggested in the same study.
Acetic acid anilideChEBI
Acetate anilideGenerator
Chemical FormulaC8H9NO
Average Molecular Weight135.1632
Monoisotopic Molecular Weight135.068413915
IUPAC NameN-phenylacetamide
Traditional Nameacetanilide
CAS Registry Number55576-55-1
InChI Identifier
Chemical Taxonomy
Description Belongs to the class of organic compounds known as benzene and substituted derivatives. These are aromatic compounds containing one monocyclic ring system consisting of benzene.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassNot Available
Direct ParentBenzene and substituted derivatives
Alternative Parents
  • Monocyclic benzene moiety
  • Organic 1,3-dipolar compound
  • Propargyl-type 1,3-dipolar organic compound
  • Carboximidic acid derivative
  • Carboximidic acid
  • Organic nitrogen compound
  • Organic oxygen compound
  • Organopnictogen compound
  • Hydrocarbon derivative
  • Organooxygen compound
  • Organonitrogen compound
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors

Biological location:


Physical Properties
Experimental Properties
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water Solubility6.39 mg/mL at 25 °CNot Available
LogP1.16HANSCH,C ET AL. (1995)
Predicted Properties
Water Solubility4.03 g/LALOGPS
pKa (Strongest Acidic)14.38ChemAxon
pKa (Strongest Basic)-4.4ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count1ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area29.1 ŲChemAxon
Rotatable Bond Count1ChemAxon
Refractivity40.92 m³·mol⁻¹ChemAxon
Polarizability14.52 ųChemAxon
Number of Rings1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon


Spectrum TypeDescriptionSplash KeyDeposition DateView
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-000f-9000000000-62d570000b48b08370732017-09-12View Spectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0006-9100000000-4122036cecde322748ea2017-09-12View Spectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-014i-0900000000-5b4e4f73d383d9139de82017-09-12View Spectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00dr-4900000000-2293bbd44d7f9fc8077c2017-09-12View Spectrum
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-000f-9000000000-62d570000b48b08370732018-05-18View Spectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0006-9100000000-4122036cecde322748ea2018-05-18View Spectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-014i-0900000000-5b4e4f73d383d9139de82018-05-18View Spectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00dr-4900000000-2293bbd44d7f9fc8077c2018-05-18View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0006-9200000000-2bd7881947c0c62f2a312017-09-01View Spectrum
MSMass Spectrum (Electron Ionization)splash10-0006-9200000000-2bd7881947c0c62f2a312021-09-05View Spectrum


Spectrum TypeDescriptionSplash KeyDeposition DateView
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-001i-0900000000-7eb05e193f729f0e27112017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-000x-9700000000-e7d678f13a1e17c9ed992017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0006-9000000000-1d77cc60e4a023d4dd222017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0006-9000000000-8877ad97a3992f9131132017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0006-9000000000-71ff77e29eb7281376052017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , positivesplash10-014r-4900000000-7f8d10f07700a193e6222017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , positivesplash10-014u-9300000000-f975b8216fe43fc1d9cc2017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , positivesplash10-0006-9200000000-12e9d1610beecb011c9d2017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , positivesplash10-004l-9200000000-2d487e012ca3b59d0a9b2017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , positivesplash10-004l-9000000000-e50ad2b0e89696e088512017-09-14View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-000l-5900000000-61578dc3c9789feb5f8a2016-08-02View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0006-9300000000-299ec76356db162d42592016-08-02View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-00kf-9000000000-f918e8f5428211fb9a252016-08-02View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-001i-2900000000-9def162dfa4b1400554c2016-08-03View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0006-9500000000-137a2164ab31a33087922016-08-03View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0006-9100000000-63a8773b99832a19d5e22016-08-03View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-000l-4900000000-b549e531b7dd15d51b672021-09-07View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0006-9000000000-60ecfd1f5d15dfbcfb812021-09-07View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-014l-9000000000-df32423a180287f625672021-09-07View Spectrum
Biological Properties
Cellular Locations
  • Membrane
Biospecimen LocationsNot Available
Tissue LocationsNot Available
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB022512
KNApSAcK IDNot Available
Chemspider ID880
KEGG Compound IDC07565
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkN-Phenylacetamide
PubChem Compound904
PDB IDNot Available
ChEBI ID28884
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Ogino M, Nakada Y, Negoro N, Itokawa S, Nishimura S, Sanada T, Satomi T, Kita S, Kubo K, Marui S: Discovery of a novel acyl-CoA: cholesterol acyltransferase inhibitor: the synthesis, biological evaluation, and reduced adrenal toxicity of (4-phenylcoumarin)acetanilide derivatives with a carboxylic acid moiety. Chem Pharm Bull (Tokyo). 2011;59(11):1369-75. [PubMed:22041073 ]
  2. Poraj-Kobielska M, Kinne M, Ullrich R, Scheibner K, Kayser G, Hammel KE, Hofrichter M: Preparation of human drug metabolites using fungal peroxygenases. Biochem Pharmacol. 2011 Oct 1;82(7):789-96. doi: 10.1016/j.bcp.2011.06.020. Epub 2011 Jun 23. [PubMed:21723855 ]
  3. Wu Y, Choy PY, Mao F, Kwong FY: Toluene derivatives as simple coupling precursors for cascade palladium-catalyzed oxidative C-H bond acylation of acetanilides. Chem Commun (Camb). 2013 Jan 25;49(7):689-91. doi: 10.1039/c2cc37352a. [PubMed:23230572 ]
  4. Yan GF, Wang Q, Wei BL, Sun XC, Chen GQ, Gao SM: [Photophysical properties of novel organic europium (III) complexes]. Guang Pu Xue Yu Guang Pu Fen Xi. 2010 Oct;30(10):2606-10. [PubMed:21137382 ]
  5. Chen CZ, Yan CT, Kumar PV, Huang JW, Jen JF: Determination of alachlor and its metabolite 2,6-diethylaniline in microbial culture medium using online microdialysis enriched-sampling coupled to high-performance liquid chromatography. J Agric Food Chem. 2011 Aug 10;59(15):8078-85. doi: 10.1021/jf201129j. Epub 2011 Jul 11. [PubMed:21707080 ]
  6. Liang HQ, Tao YP, Han LG, Han YX, Mo YJ: [Raman, FTIR spectra and normal mode analysis of acetanilide]. Guang Pu Xue Yu Guang Pu Fen Xi. 2012 Oct;32(10):2706-9. [PubMed:23285870 ]
  7. Sun L, Zhang S, Song Q: (4-Chloro-acetanilido-kappa(2)N,O)bis-[2-(pyridin-2-yl)phenyl-kappa(2)C(1),N]irid ium(III). Acta Crystallogr Sect E Struct Rep Online. 2013 Feb 1;69(Pt 2):m98. doi: 10.1107/S1600536813000433. Epub 2013 Jan 12. [PubMed:23424440 ]
  8. Bouchonnet S, Bourcier S, Souissi Y, Genty C, Sablier M, Roche P, Boireau V, Ingrand V: GC-MS(n) and LC-MS/MS couplings for the identification of degradation products resulting from the ozonation treatment of Acetochlor. J Mass Spectrom. 2012 Apr;47(4):439-52. doi: 10.1002/jms.2056. [PubMed:22689619 ]
  9. Kalkhoff SJ, Vecchia AV, Capel PD, Meyer MT: Eleven-year trend in acetanilide pesticide degradates in the Iowa River, Iowa. J Environ Qual. 2012 Sep-Oct;41(5):1566-79. doi: 10.2134/jeq2011.0426. [PubMed:23099949 ]
  10. Weiler M, Nakamura T, Sekiya H, Dopfer O, Miyazaki M, Fujii M: Ionization-induced solvent migration in acetanilide-methanol clusters inferred from isomer-selective infrared spectroscopy. Chemphyschem. 2012 Dec 7;13(17):3875-81. doi: 10.1002/cphc.201200704. Epub 2012 Oct 30. [PubMed:23112069 ]
  11. Fu YY, Yang CX, Yan XP: Metal-organic framework MIL-100(Fe) as the stationary phase for both normal-phase and reverse-phase high performance liquid chromatography. J Chromatogr A. 2013 Jan 25;1274:137-44. doi: 10.1016/j.chroma.2012.12.015. Epub 2012 Dec 17. [PubMed:23290359 ]
  12. Ogino M, Fukui S, Nakada Y, Tokunoh R, Itokawa S, Kakoi Y, Nishimura S, Sanada T, Fuse H, Kubo K, Wada T, Marui S: Discovery of a potent and orally available acyl-CoA: cholesterol acyltransferase inhibitor as an anti-atherosclerotic agent: (4-phenylcoumarin)acetanilide derivatives. Chem Pharm Bull (Tokyo). 2011;59(10):1268-73. [PubMed:21963637 ]
  13. Lu C, Markina NA, Larock RC: Synthesis of N-acylcarbazoles through palladium-catalyzed aryne annulation of 2-haloacetanilides. J Org Chem. 2012 Dec 21;77(24):11153-60. doi: 10.1021/jo3021727. Epub 2012 Dec 5. [PubMed:23214463 ]


General function:
Involved in acetyltransferase activity
Specific function:
Participates in the detoxification of a plethora of hydrazine and arylamine drugs. Catalyzes the N- or O-acetylation of various arylamine and heterocyclic amine substrates and is able to bioactivate several known carcinogens.
Gene Name:
Uniprot ID:
Molecular weight:
General function:
Involved in acetyltransferase activity
Specific function:
Not Available
Gene Name:
Uniprot ID:
Molecular weight: