Mesoxalic acid

CAS Registry Number®

473-90-5

CAS Name

Mesoxalic acid

Molecular Formula

C3H2O5

Molecular Mass

118.05

Cite this Page

Mesoxalic acid.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=473-90-5 (retrieved 2025-03-29) (CAS RN: 473-90-5).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    166 °C (decomp)

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C3H2O5/c4-1(2(5)6)3(7)8/h(H,5,6)(H,7,8)

InChIKey

InChIKey=XEEVLJKYYUVTRC-UHFFFAOYSA-N

SMILES

C(C(O)=O)(C(O)=O)=O

Canonical SMILES

O=C(O)C(=O)C(=O)O

Other Names for this Substance

  • Propanedioic acid, 2-oxo-
  • Mesoxalic acid
  • Propanedioic acid, oxo-
  • 2-Oxopropanedioic acid
  • Ketomalonic acid

View All

Deleted or Replaced CAS Registry Numbers

857214-94-9

CAS INSIGHTSTM
A hexagon honeycomb pattern featuring icons representing Data Fabric Analytics, Antennas, Construction, DNA, and Sustainability Bamboo. Each hexagon contains a distinct symbol related to its theme, arranged in a visually appealing and interconnected design.