Maleylacetic acid

Names
IUPAC name 4-Oxohex-2-enedioic acid
Other names 2-Maleylacetic acid Maleoylacetic acid
Identifiers
CAS Number	24740-88-3 (2Z)
3D model (JSmol)	Interactive image
3DMet	B00407
Beilstein Reference	8404489
ChEBI	CHEBI:19672
ChemSpider	4575314 (2E) 4444140 (2Z) 406 ()
KEGG	C02222
MeSH	Maleoylacetic+acid
PubChem CID	5462172 (2E) 5280500 (2Z) 419 ()
CompTox Dashboard (EPA)	DTXSID001029401
InChI InChI=1S/C6H6O5/c7-4(3-6(10)11)1-2-5(8)9/h1-2H,3H2,(H,8,9)(H,10,11) Key: SOXXPQLIZIPMIZ-UHFFFAOYSA-N
SMILES OC(=O)CC(=O)C=CC(O)=O
Properties
Chemical formula	C6H6O5
Molar mass	158.10 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Maleylacetic acid is a chemical compound produced in the biodegradation of catechin by Bradyrhizobium japonicum.

The enzyme maleylacetate reductase uses 3-oxoadipate, NAD⁺, and NADP⁺ to produce 2-maleylacetate, NADH, NADPH, and H⁺.