Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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Relative enthalpies of isomers - Comparison of 298.15K enthalpies (kJ mol^-1)

Isomers of C₄H₇NO

index	Species	CAS number	Name	Relative experimental enthalpy (kJ mol-1)	sketch
a	C4H7NO	616455	2-Pyrrolidinone	0.0
b	C4H7NO	79390	Methacrylamide	39.7
c	C4H7NO	1120645	Oxazole, 4,5-dihydro-2-methyl-	66.9
d	C4H7NO	62957602	Ethoxyacetonitrile	127.9