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[edit]

• 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[edit]

• 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)