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Molecule record

1H-indole-4-carboxylic acid

C9H7NO2

161.16 g/mol

Loading structure

Molecular properties

Formula
C9H7NO2
Molar mass
161.16 g·mol−1
Exact mass
161.0477 Da
7
PubChem CID
595229

Functional groups

Aromatic ring
Carboxylic acid

Physical properties

No source-backed physical properties are curated for this molecule yet.

Common names and synonyms

  • 1H-Indole-4-carboxylic acid #
  • 1h-4-indolecarboxylic acid
  • 2124-55-2
  • 4-Carboxyindole
  • 4-INDOLECARBOXYLIC ACID
  • 4-indole-carboxylic acid
  • 621-279-0
  • AB01320195-02
Show all 24 synonyms
  • AC-3145
  • AKOS000265423
  • CHEMBL2018157
  • DTXCID70295305
  • DTXSID60344230
  • EN300-41008
  • FT-0602312
  • Indole-4-Carboxylicacid
  • Indole-4-carboxylic acid
  • MFCD00009739
  • NCGC00324814-01
  • RefChem:790971
  • SCHEMBL40257
  • SCHEMBL4491526
  • SY004026
  • indol-4-yl carboxylic acid

Structure identifiers

Canonical SMILES
O=C(O)c1cccc2[nH]ccc12
Isomeric SMILES
C1=CC(=C2C=CNC2=C1)C(=O)O
InChI
InChI=1S/C9H7NO2/c11-9(12)7-2-1-3-8-6(7)4-5-10-8/h1-5,10H,(H,11,12)
InChIKey
ROGHUJUFCRFUSO-UHFFFAOYSA-N
PubChem CID
595229

Spectroscopy

Tabs appear only for spectra stored with clear provenance.

Open library
No redistributable or simulated spectroscopy record is attached yet.

Simulated NMR

On-demand educational prediction for 1H-indole-4-carboxylic acid; not experimental data.

Simulated EI mass spectrum

On-demand educational fragmentation for 1H-indole-4-carboxylic acid; not experimental data.

Sources

Molecule identity

Retrieved 8/20/2026. Reuse status is summarized by the badge; open the source for full details.

PubChem(link only)
Open source record
1H-indole-4-carboxylic acid - Formula, Structure | ChemArche