Molecular properties
- Formula
- C7H6O3
- Molar mass
- 138.12 g·mol−1
- Exact mass
- 138.0317 Da
- 5
- PubChem CID
- 135
Molecule record
4-hydroxybenzoic acid
C7H6O3
138.12 g/mol
Loading structure
Functional groups
Aromatic ring
Carboxylic acid
Phenol
Physical properties
No source-backed physical properties are curated for this molecule yet.
Common names and synonyms
- 202-804-9
- 4-Carboxyphenol
- 4-Hydroxybenzoate
- 4-Hydroxybenzoesaeure
- 4-hydroxy benzoic acid
- 99-96-7
- Benzoic acid, 4-hydroxy-
- Benzoic acid, p-hydroxy-
Show all 24 synonyms
- CHEBI:17879
- CHEBI:30763
- DTXCID806647
- DTXSID3026647
- FEMA NO. 3986
- Hydroxybenzoic acid
- JG8Z55Y12H
- NSC-4961
- Paraben-acid
- RefChem:25955
- p-Hydroxybenzoic acid
- p-Oxybenzoesaure
- p-Oxybenzoesaure [German]
- p-Salicylic acid
- p-carboxyphenol
- para-Hydroxybenzoic acid
Structure identifiers
- Canonical SMILES
- O=C(O)c1ccc(O)cc1
- Isomeric SMILES
- C1=CC(=CC=C1C(=O)O)O
- InChI
- InChI=1S/C7H6O3/c8-6-3-1-5(2-4-6)7(9)10/h1-4,8H,(H,9,10)
- InChIKey
- FJKROLUGYXJWQN-UHFFFAOYSA-N
- PubChem CID
- 135
Spectroscopy
Tabs appear only for spectra stored with clear provenance.
No redistributable or simulated spectroscopy record is attached yet.
Simulated NMR
On-demand educational prediction for 4-hydroxybenzoic acid; not experimental data.
Simulated EI mass spectrum
On-demand educational fragmentation for 4-hydroxybenzoic acid; not experimental data.
Sources
Molecule identity
Retrieved 8/20/2026. Reuse status is summarized by the badge; open the source for full details.