2-Hydroxymuconate semialdehyde

2-Hydroxymuconate semialdehyde is formed from catechol by the enzyme catechol 2,3-dioxygenase during the degradation of benzoates.^[1] It is hydrolysed into formate and 2-oxopent-4-enoate by 2-hydroxymuconate-semialdehyde hydrolase.

2-Hydroxymuconate semialdehyde

Names
Preferred IUPAC name (2Z,4E)-2-Hydroxy-6-oxohexa-2,4-dienoic acid
Other names hydroxymuconic semialdehyde; 2-hydroxymuconate semialdehyde; 2-hydroxymuconate-6-semialdehyde
Identifiers
CAS Number	3270-98-2
3D model (JSmol)	Interactive image
ChemSpider	13294906
PubChem CID	5280366
InChI InChI=1S/C6H6O4/c7-4-2-1-3-5(8)6(9)10/h1-4,8H,(H,9,10)/b2-1+,5-3- Key: KGLCZTRXNNGESL-WFTYEQLWSA-N
SMILES C(=C/C=O)\C=C(\C(=O)O)/O
Properties
Chemical formula	C6H6O4
Molar mass	142.110 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references