Record Information
Version1.0
Creation date2010-04-08 22:04:48 UTC
Update date2020-09-17 15:40:49 UTC
Primary IDFDB001037
Secondary Accession NumbersNot Available
Chemical Information
FooDB Name4-Aminobenzoic acid
Descriptionp-Aminobenzoic acid, also known as PABA or p-aminobenzoate, belongs to the class of organic compounds known as aminobenzoic acids. These are benzoic acids containing an amine group attached to the benzene moiety. p-Aminobenzoic acid is a moderately basic compound (based on its pKa). p-Aminobenzoic acid exists in all living species, ranging from bacteria to humans. Outside of the human body, p-Aminobenzoic acid is found, on average, in the highest concentration within pineapples. p-Aminobenzoic acid has also been detected, but not quantified in, milk (cow) and rices. This could make p-aminobenzoic acid a potential biomarker for the consumption of these foods. An aminobenzoic acid in which the amino group is para to the carboxy group.
CAS Number150-13-0
Structure
Thumb
Synonyms
Predicted Properties
PropertyValueSource
Water Solubility4.41 g/LALOGPS
logP0.78ALOGPS
logP0.8ChemAxon
logS-1.5ALOGPS
pKa (Strongest Acidic)4.77ChemAxon
pKa (Strongest Basic)2.69ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area63.32 ŲChemAxon
Rotatable Bond Count1ChemAxon
Refractivity38.01 m³·mol⁻¹ChemAxon
Polarizability13.44 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Chemical FormulaC7H7NO2
IUPAC name4-aminobenzoic acid
InChI IdentifierInChI=1S/C7H7NO2/c8-6-3-1-5(2-4-6)7(9)10/h1-4H,8H2,(H,9,10)
InChI KeyALYNCZNDIQEVRV-UHFFFAOYSA-N
Isomeric SMILESNC1=CC=C(C=C1)C(O)=O
Average Molecular Weight137.136
Monoisotopic Molecular Weight137.047678473
Classification
Description Belongs to the class of organic compounds known as aminobenzoic acids. These are benzoic acids containing an amine group attached to the benzene moiety.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassBenzoic acids and derivatives
Direct ParentAminobenzoic acids
Alternative Parents
Substituents
  • Aminobenzoic acid
  • Benzoic acid
  • Benzoyl
  • Aniline or substituted anilines
  • Amino acid or derivatives
  • Amino acid
  • Carboxylic acid derivative
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Amine
  • Organonitrogen compound
  • Organooxygen compound
  • Primary amine
  • Hydrocarbon derivative
  • Organic oxide
  • Organopnictogen compound
  • Organic oxygen compound
  • Organic nitrogen compound
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Ontology
Disposition

Route of exposure:

Source:

Biological location:

Role

Industrial application:

Physico-Chemical Properties
Physico-Chemical Properties - Experimental
Spectra
Spectra
EI-MS/GC-MS
TypeDescriptionSplash KeyView
EI-MSMass Spectrum (Electron Ionization)splash10-00dr-8900000000-bface88b2e77a7dce6e12015-03-01View Spectrum
GC-MS4-Aminobenzoic acid, non-derivatized, GC-MS Spectrumsplash10-00yl-1960000000-b22b04854c131470802aSpectrum
GC-MS4-Aminobenzoic acid, 1 TMS, GC-MS Spectrumsplash10-0fkc-2900000000-dec9b6851633ff2c426cSpectrum
GC-MS4-Aminobenzoic acid, 2 TMS, GC-MS Spectrumsplash10-00yl-2890000000-b299bfaaed61286c2ff6Spectrum
GC-MS4-Aminobenzoic acid, non-derivatized, GC-MS Spectrumsplash10-0079-9600000000-075c262f1e5d23ef097dSpectrum
GC-MS4-Aminobenzoic acid, non-derivatized, GC-MS Spectrumsplash10-00yl-1960000000-b22b04854c131470802aSpectrum
GC-MS4-Aminobenzoic acid, non-derivatized, GC-MS Spectrumsplash10-0fkc-2900000000-dec9b6851633ff2c426cSpectrum
GC-MS4-Aminobenzoic acid, non-derivatized, GC-MS Spectrumsplash10-00yl-2890000000-b299bfaaed61286c2ff6Spectrum
GC-MS4-Aminobenzoic acid, non-derivatized, GC-MS Spectrumsplash10-00yl-1960000000-4d7d9e3e3a7a741c72caSpectrum
Predicted GC-MS4-Aminobenzoic acid, non-derivatized, Predicted GC-MS Spectrum - 70eV, Positivesplash10-00kr-5900000000-8244277f60fc465369b8Spectrum
Predicted GC-MS4-Aminobenzoic acid, 1 TMS, Predicted GC-MS Spectrum - 70eV, Positivesplash10-006x-4900000000-299c72af4aa4008292bcSpectrum
Predicted GC-MS4-Aminobenzoic acid, non-derivatized, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MS4-Aminobenzoic acid, non-derivatized, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
MS/MS
TypeDescriptionSplash KeyView
MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-00ku-4900000000-ab0d2860a4f23e4fcad42012-07-24View Spectrum
MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-00mo-9100000000-667a53f89529678400c72012-07-24View Spectrum
MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-014i-9000000000-0bbc34587525655f98ef2012-07-24View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negativesplash10-000i-0900000000-8f6c193895f5adf391be2012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negativesplash10-0006-9200000000-78f63538a3011f0365512012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negativesplash10-0006-9000000000-521edb7d484c452d0da32012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Negativesplash10-0006-9000000000-7ae0035594587960bab72012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Negativesplash10-00kf-9000000000-35088605171b150e8b082012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Positivesplash10-00di-3900000000-d67f9d252f758529a83c2012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Positivesplash10-00di-1900000000-e4d34d9516fe889137f62012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Positivesplash10-00di-6900000000-387d1a3c2d588c6f85522012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Positivesplash10-00r6-9200000000-9ef61d003f891b00406f2012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Positivesplash10-014i-9000000000-eaf693e5f0cde39a548e2012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QTOF (UPLC Q-Tof Premier, Waters) , Positivesplash10-000i-7900000000-225973eab49386396fa92012-08-31View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-000i-0900000000-8f6c193895f5adf391be2017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0006-9200000000-78f63538a3011f0365512017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0006-9000000000-521edb7d484c452d0da32017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0006-9000000000-7ae0035594587960bab72017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-00kf-9000000000-35088605171b150e8b082017-09-14View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0079-0900000000-173f144fba431cca91642016-09-12View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00di-1900000000-ab3524c5aadc6fdc28cb2016-09-12View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0006-9200000000-67cea679b40b94c39ac02016-09-12View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-000i-3900000000-682d5d9d22372ece770b2016-09-12View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-000f-9600000000-8d4bba3f647000005bb02016-09-12View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0006-9100000000-5d9b80bb0601c2f238c22016-09-12View Spectrum
NMR
TypeDescriptionView
1D NMR1H NMR Spectrum (1D, 600 MHz, H2O, experimental)Spectrum
1D NMR1H NMR Spectrum (1D, 400 MHz, DMSO-d6, experimental)Spectrum
1D NMR1H NMR Spectrum (1D, D2O, experimental)Spectrum
2D NMR[1H, 1H]-TOCSY. Unexported temporarily by An Chi on Oct 15, 2021 until json or nmrML file is generated. 2D NMR Spectrum (experimental)Spectrum
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental)Spectrum
ChemSpider ID953
ChEMBL IDCHEMBL542
KEGG Compound IDC00568
Pubchem Compound ID978
Pubchem Substance IDNot Available
ChEBI ID30753
Phenol-Explorer IDNot Available
DrugBank IDDB02362
HMDB IDHMDB01392
CRC / DFC (Dictionary of Food Compounds) IDBQP21-U:BQP21-U
EAFUS ID164
Dr. Duke IDP-AMINOBENZOIC-ACID
BIGG IDNot Available
KNApSAcK IDC00001401
HET IDPAB
Food Biomarker OntologyNot Available
VMH IDNot Available
Flavornet IDNot Available
GoodScent IDNot Available
SuperScent IDNot Available
Wikipedia IDp-Aminobenzoic acid
Phenol-Explorer Metabolite IDNot Available
Duplicate IDSNot Available
Old DFC IDSNot Available
Associated Foods
FoodContent Range AverageReference
Processing...
Biological Effects and Interactions
Health Effects / Bioactivities
EnzymesNot Available
PathwaysNot Available
MetabolismNot Available
BiosynthesisNot Available
Organoleptic Properties
FlavoursNot Available
Files
MSDSshow
References
Synthesis ReferenceNot Available
General ReferenceNot Available
Content Reference— Duke, James. 'Dr. Duke's Phytochemical and Ethnobotanical Databases. United States Department of Agriculture.' Agricultural Research Service, Accessed April 27 (2004).