Molecular properties
- Formula
- C4H4O5
- Molar mass
- 132.07 g·mol−1
- Exact mass
- 132.0059 Da
- 3
- PubChem CID
- 970
Molecule record
2-oxobutanedioic acid
C4H4O5
132.07 g/mol
Loading structure
Functional groups
Alkane / alkyl carbon
Carboxylic acid
Ketone
Physical properties
No source-backed physical properties are curated for this molecule yet.
Common names and synonyms
- 2-Ketosuccinic acid
- 2-Oxosuccinic acid
- 2-oxo-butanedioic acid
- 206-329-8
- 2F399MM81J
- 328-42-7
- Acid, Oxalacetic
- Acid, Oxaloacetic
Show all 24 synonyms
- Bioepg
- Butanedioic acid, oxo-
- CHEBI:30744
- DTXCID901646
- DTXSID8021646
- Ketosuccinic acid
- NSC-77688
- Oxalacetic acetic
- Oxalacetic acid trans-(z)-enol
- Oxobutanedioic acid
- Oxosuccinic acid
- RefChem:857040
- keto-oxaloacetate
- oxalacetic acid
- oxaloacetate
- oxaloacetic acid
Structure identifiers
- Canonical SMILES
- O=C(O)CC(=O)C(=O)O
- Isomeric SMILES
- C(C(=O)C(=O)O)C(=O)O
- InChI
- InChI=1S/C4H4O5/c5-2(4(8)9)1-3(6)7/h1H2,(H,6,7)(H,8,9)
- InChIKey
- KHPXUQMNIQBQEV-UHFFFAOYSA-N
- PubChem CID
- 970
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 2-oxobutanedioic acid; not experimental data.
Simulated EI mass spectrum
On-demand educational fragmentation for 2-oxobutanedioic acid; not experimental data.
Sources
Molecule identity
Retrieved 8/20/2026. Reuse status is summarized by the badge; open the source for full details.