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 0K enthalpies (kJ mol^-1)

Isomers of C₄H₈O₂

index	Species	CAS number	Name	Relative experimental enthalpy (kJ mol-1)	sketch
a	C4H8O2	107926	Butanoic acid
b	C4H8O2	123911	1,4-Dioxane
c	C4H8O2	141786	Ethyl acetate
d	C4H8O2	497267	1,3-Dioxolane, 2-methyl-
e	C4H8O2	505226	1,3-Dioxane
f	C4H8O2	922690	Ethene, 1,1-dimethoxy-