# Acetic acid, 2-amino-2-oxo-, sodium salt (1:1)

**CAS:** 565-73-1  
**PubChem CID:** [5242](https://pubchem.ncbi.nlm.nih.gov/compound/5242)  
**Molecular formula:** C₂H₂NNaO₃  
**Molar mass:** 111.03 g/mol  
**IUPAC:** sodium oxamate  
**SMILES:** `C(=O)(C(=O)[O-])N.[Na+]`  
**InChIKey:** `RQVZIJIQDCGIKI-UHFFFAOYSA-M`  
**InChI:** `InChI=1S/C2H3NO3.Na/c3-1(4)2(5)6;/h(H2,3,4)(H,5,6);/q;+1/p-1`  

## Physicochemical properties

| Parameter | Value |
|---|---|
| PSA | 83.2 Ų |
| Hydrogen bond donors | 1 |
| Hydrogen bond acceptors | 3 |
| Rotatable bonds | 1 |
| Heavy atoms | 7 |

## 3D structure

The molecule contains 9 atoms connected by 8 chemical bonds. Interactive 3D model available at: https://molgod.org/molecule/565-73-1/

## Synonyms

- 565-73-1
- Oxamic acid, sodium salt
- Acetic acid, aminooxo-, monosodium salt
- EINECS 209-290-5
- Acetic acid, 2-amino-2-oxo-, sodium salt (1:1)
- RefChem:552125
- sodium oxamate
- Oxamic acid sodium salt
- Sodium 2-amino-2-oxoacetate
- Aminooxoacetic acid sodium salt

## Data sources

- [PubChem CID 5242](https://pubchem.ncbi.nlm.nih.gov/compound/5242)
- [Wikidata](https://www.wikidata.org/wiki/Q72508045)
- [NIST WebBook](https://webbook.nist.gov/cgi/cbook.cgi?ID=565-73-1)
- [ChEMBL](https://www.ebi.ac.uk/chembl/g/#search_results/all/query=565-73-1)

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*Last updated: 2026-10-17 · Generator: MOL-GOD v3.12.33*