Molecule record

p-aminobenzoic acid

C₇H₇NO₂

137.14 g/mol

Molecular properties

Formula: C₇H₇NO₂
Molar mass: 137.14 g·mol⁻¹
Exact mass: 137.0477 Da
: 5
: 2
: 3
: 63.30 Å²
: 0.8 (PubChem computed XLogP3-AA descriptor)
CAS: 150-13-0
PubChem CID: 978

Interactions

Polarity: Often polar; exact polarity depends on size, substitution, and ionization state.
Acid-base behavior: Review ionizable groups and pKa data where available; ChemForge does not infer definitive acid-base state from identity alone.
Intermolecular forces: Assess dispersion, dipole interactions, hydrogen bonding, and ionic character from the functional groups shown.

Functional groups

Alcohol

Alkene

Amine

Aromatic ring

Carboxylic acid

Phenol

Physical properties

Property	Value	Conditions	Source
Logp	0.8	PubChem computed XLogP3-AA descriptor	PubChem(link only)

Common names and synonyms

1-Amino-4-carboxybenzene
150-13-0
4-Carboxyaniline
4-aminobenzoic acid
Amben
Anticanitic vitamin
Bacterial vitamin H1
Benzoic acid, 4-amino-

Show all 23 synonyms

Chromotrichia factor
PABA
Pabacyd
Pabafilm
Pabamine
Paraminol
Paranate
RVPaba Lipstick
Romavit
Sunbrella
Vitamin BX
Vitamin H'
p-Carboxyaniline
p-Carboxyphenylamine
para-aminobenzoic acid

Structure identifiers

Canonical SMILES: C1=CC(=CC=C1C(=O)O)N
Isomeric SMILES: C1=CC(=CC=C1C(=O)O)N
InChI: InChI=1S/C7H7NO2/c8-6-3-1-5(2-4-6)7(9)10/h1-4H,8H2,(H,9,10)
InChIKey: ALYNCZNDIQEVRV-UHFFFAOYSA-N
PubChem CID: 978

Spectroscopy

Tabs appear only for spectra stored with clear provenance.

Open library

IR spectrum

ChemArche Original Educational Content(redistributable)

Simulated FTIR trace

Predicted FTIR / %T

4 cm^-1 resolution / deterministic instrument profile

Hover for cursor

ResolutionNoise

Peak assignments

3350 cm⁻¹broad O-H (simulated)

3000 cm⁻¹broad acid O-H (simulated)

1710 cm⁻¹C=O acid (simulated)

1645 cm⁻¹C=C alkene (simulated)

3030 cm⁻¹aromatic C-H (simulated)

1600 cm⁻¹aromatic C=C (simulated)

2960 cm⁻¹sp3 C-H (simulated)

Simulated NMR

On-demand educational prediction for p-aminobenzoic acid; not experimental data.

Simulated EI mass spectrum

On-demand educational fragmentation for p-aminobenzoic acid; not experimental data.

Sources

Molecule identity

Retrieved 8/7/2026. Reuse status is summarized by the badge; open the source for full details.

PubChem(link only)

simulated IR

ChemForge original educational simulation.

ChemArche Original Educational Content(redistributable)

Open source record