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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 14:32:21 UTC
Update Date2021-09-26 23:09:30 UTC
HMDB IDHMDB0255013
Secondary Accession NumbersNone
Metabolite Identification
Common NameN-(4-Methoxyphenyl)acetamide
Descriptionmethacetin, also known as aceto-p-anisidide or NSC 4687, belongs to the class of organic compounds known as acetanilides. These are organic compounds containing an acetamide group conjugated to a phenyl group. methacetin is a moderately basic compound (based on its pKa). This compound has been identified in human blood as reported by (PMID: 31557052 ). N-(4-methoxyphenyl)acetamide is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically N-(4-Methoxyphenyl)acetamide 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.
Structure
Thumb
Synonyms
ValueSource
4'-MethoxyacetanilideChEBI
4-(Acetylamino)anisoleChEBI
4-MethoxyacetanilideChEBI
Aceto-p-anisidideChEBI
Acetyl-p-anisidineChEBI
N-(4-Methoxyphenyl)acetamideChEBI
N-(4-Methoxyphenyl)acetic acid amideChEBI
N-Acetyl-p-anisidineChEBI
N-Acetyl-p-methoxyanilineChEBI
NSC 4687ChEBI
p-AcetanisidineChEBI
p-MethoxyacetanilideChEBI
N-(4-Methoxyphenyl)acetate amideGenerator
Methacetin, 14C-labeledMeSH
MethacetinMeSH
Chemical FormulaC9H11NO2
Average Molecular Weight165.192
Monoisotopic Molecular Weight165.078978598
IUPAC NameN-(4-methoxyphenyl)ethanimidic acid
Traditional NameN-(4-methoxyphenyl)ethanimidic acid
CAS Registry NumberNot Available
SMILES
COC1=CC=C(C=C1)N=C(C)O
InChI Identifier
InChI=1S/C9H11NO2/c1-7(11)10-8-3-5-9(12-2)6-4-8/h3-6H,1-2H3,(H,10,11)
InChI KeyXVAIDCNLVLTVFM-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as acetanilides. These are organic compounds containing an acetamide group conjugated to a phenyl group.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassAnilides
Direct ParentAcetanilides
Alternative Parents
Substituents
  • Acetanilide
  • N-acetylarylamine
  • Methoxyaniline
  • Phenoxy compound
  • Anisole
  • Phenol ether
  • N-arylamide
  • Methoxybenzene
  • Alkyl aryl ether
  • Acetamide
  • Carboxamide group
  • Secondary carboxylic acid amide
  • Ether
  • Carboxylic acid derivative
  • Organic oxide
  • Organooxygen compound
  • Organonitrogen compound
  • Organic nitrogen compound
  • Carbonyl group
  • Organopnictogen compound
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateNot Available
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
logP1.73ALOGPS
logP1.78ChemAxon
logS-2.5ALOGPS
pKa (Strongest Acidic)5.55ChemAxon
pKa (Strongest Basic)1.5ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area41.82 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity48.14 m³·mol⁻¹ChemAxon
Polarizability17.62 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+139.85830932474
DeepCCS[M-H]-137.2130932474
DeepCCS[M-2H]-173.01530932474
DeepCCS[M+Na]+148.51330932474
AllCCS[M+H]+138.932859911
AllCCS[M+H-H2O]+134.832859911
AllCCS[M+NH4]+142.732859911
AllCCS[M+Na]+143.932859911
AllCCS[M-H]-136.832859911
AllCCS[M+Na-2H]-138.132859911
AllCCS[M+HCOO]-139.732859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
N-(4-Methoxyphenyl)acetamideCOC1=CC=C(C=C1)N=C(C)O2393.6Standard polar33892256
N-(4-Methoxyphenyl)acetamideCOC1=CC=C(C=C1)N=C(C)O1592.5Standard non polar33892256
N-(4-Methoxyphenyl)acetamideCOC1=CC=C(C=C1)N=C(C)O1567.5Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - N-(4-Methoxyphenyl)acetamide GC-MS (Non-derivatized) - 70eV, Positivesplash10-00di-3900000000-2fc5678b5a62a15fda552021-09-24Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - N-(4-Methoxyphenyl)acetamide GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - N-(4-Methoxyphenyl)acetamide GC-MS (TMS_1_1) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - N-(4-Methoxyphenyl)acetamide GC-MS (TBDMS_1_1) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - N-(4-Methoxyphenyl)acetamide 10V, Positive-QTOFsplash10-014i-0900000000-c7710efa64e4277d0ac52016-08-02Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - N-(4-Methoxyphenyl)acetamide 20V, Positive-QTOFsplash10-01b9-0900000000-85f0be10ea01fe60ca182016-08-02Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - N-(4-Methoxyphenyl)acetamide 40V, Positive-QTOFsplash10-0l02-3900000000-03a419f60c30c136972c2016-08-02Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - N-(4-Methoxyphenyl)acetamide 10V, Negative-QTOFsplash10-03di-0900000000-e4551f4bfc03b346bbab2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - N-(4-Methoxyphenyl)acetamide 20V, Negative-QTOFsplash10-0229-0900000000-a74c7ca6ab654c10d6052016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - N-(4-Methoxyphenyl)acetamide 40V, Negative-QTOFsplash10-0a4i-2900000000-6ff967b4a9a6590710ea2016-08-03Wishart LabView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound5827
PDB IDNot Available
ChEBI ID139354
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Barupal DK, Fiehn O: Generating the Blood Exposome Database Using a Comprehensive Text Mining and Database Fusion Approach. Environ Health Perspect. 2019 Sep;127(9):97008. doi: 10.1289/EHP4713. Epub 2019 Sep 26. [PubMed:31557052 ]