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 C₅H₁₂

index	Species	CAS number	Name	Relative experimental enthalpy (kJ mol-1)	sketch
a	C5H12	78784	Butane, 2-methyl-	15.3
b	C5H12	109660	Pentane	20.1
c	C5H12	463821	Propane, 2,2-dimethyl-	0.0