C5H10 is the molecular formula of 13 hydrocarbon isomers (represented by their CAS numbers on the chart). They can be divided into cycloalkanes and alkenes.

Cycloalkanes

• Cyclopentane (CAS 287-92-3)

• Methylcyclobutane (CAS 598-61-8)

Cyclopropanes

• Ethylcyclopropane (CAS 1191-96-4)

• 1,1-Dimethylcyclopropane (CAS 1630-94-0)

• (R,R)-1,2-dimethylcyclopropane or (1R-trans)-1,2-dimethylcyclopropane (CAS 20520-64-3)

• (S,S)-1,2-Dimethylcyclopropane or (1S-trans)-1,2-dimethylcyclopropane (CAS 38447-23-3)

• (R,S)-1,2-Dimethylcyclopropane or cis-1,2-dimethylcyclopropane (CAS 930-18-7)

Alkenes

Pentenes

• 1-Pentene (CAS 109-67-1)

• cis-2-Pentene (CAS 627-20-3)

• trans-2-pentene (CAS 646-04-8)

Butenes

• 2-Methyl-1-butene (CAS 563-46-2)

• 3-Methyl-1-butene (CAS 563-45-1)

• 2-Methyl-2-butene (CAS 513-35-9)