2-Oxopent-4-enoic acid

2-Oxopent-4-enoic acid (2-oxopent-4-enoate) is formed by the dehydration of 4-hydroxy-2-oxopentanoate by 2-oxopent-4-enoate hydratase or by the hydrolysis of 2-hydroxymuconate semialdehyde by 2-hydroxymuconate-semialdehyde hydrolase.^[1]

2-Oxopent-4-enoic acid

Names
Preferred IUPAC name 2-Oxopent-4-enoic acid
Other names 2-Keto-4-pentenoic acid
Identifiers
CAS Number	20406-62-6 N
3D model (JSmol)	Interactive image
Beilstein Reference	1851398
ChEBI	CHEBI:37318
ChemSpider	951
PubChem CID	976
UNII	WW9JA557NY Y
CompTox Dashboard (EPA)	DTXSID20174358
InChI InChI=1S/C5H6O3/c1-2-3-4(6)5(7)8/h2H,1,3H2,(H,7,8) Key: NOXRYJAWRSNUJD-UHFFFAOYSA-N InChI=1/C5H6O3/c1-2-3-4(6)5(7)8/h2H,1,3H2,(H,7,8) Key: NOXRYJAWRSNUJD-UHFFFAOYAP
SMILES O=C(C(=O)O)C\C=C
Properties
Chemical formula	C5H6O3
Molar mass	114.100 g·mol−1
Related compounds
Related compounds	Pentenoic acid; 4-Hydroxy-3-pentenoic acid; 2-Amino-5-chloro-4-pentenoic acid; (2R)-2-Methylpent-4-enoic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references