Metabolomics Structure Database

MDLMOL SDF CSV TSV

MW REGNO:	51251
Common Name:	cis-4-carboxymethylenebut-2-en-4-olide
Systematic Name:	(2E)-(5-oxofuran-2(5H)-ylidene)acetic acid
RefMet Name:	cis-4-Carboxymethylenebut-2-en-4-olide
Synonyms:	(5-oxo-2(5H)-furanylidene)acetic acid [PubChem Synonyms]
Exact Mass:	140.0110 (neutral)    Calculate m/z: (Choose adduct) [M+H]+ [M+H-H2O]+ [M.]+ [M+2H]2+ [M+3H]3+ [M+4H]4+ [M+K]+ [M+2K]2+ [M-H+2K]+ [M+Na]+ [M+2Na]2+ [M-H+2Na]+ [M+Li]+ [M+2Li]2+ [M+NH4]+ [M-H]- [M-2H]2- [M-3H]3- [M-4H]4- [M+Cl]- [M+OAc]- [M+HCOO]- M(neutral)
Formula:	C6H4O4
InChIKey:	AYFXPGXAZMFWNH-ONEGZZNKSA-N
ClassyFire superclass:	Organoheterocyclic compounds [C0000002]
ClassyFire class:	Dihydrofurans [C0001983]
ClassyFire subclass:	Furanones [C0001982]
ClassyFire direct parent:	Butenolides [C0002223]
SMILES:	C1=CC(=O)O/C/1=C/C(=O)O
Studies:	Available studies (via RefMet name)

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References

LIPID MAPS classification: "Update of the LIPID MAPS comprehensive classification system for lipids", Fahy E, Subramaniam S, Murphy RC, Nishijima M, Raetz CR, Shimizu T, Spener F, van Meer G, Wakelam MJ, and Dennis EA, J. Lipid Res. (2009) 50: S9-S14. DOI: 10.1194/jlr.R800095-JLR200
ClassyFire classification: "ClassyFire: automated chemical classification with a comprehensive, computable taxonomy", Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS, J. Cheminformatics (2016) 8:61. DOI: 10.1186/s13321-016-0174-y