The molecular formula C5H8 may refer to any of the following hydrocarbons:

Constitution formula for isomers of C5H8 with CAS numbers
  • 1,2-Pentadiene, two cis-trans isomers, CAS 591-95-7
  • 1,3 Pentadiene, CAS 504-60-9 (racemic mixture)
  • cis-1,3-Pentadiene or (Z)-1,3-pentadiene, CAS 1574-41-0
  • trans-1,3-Pentadiene or (E)-1,3-pentadiene, or Piperylene
  • (Ra)-2,3-Pentadiene, CAS 20431-56-5
  • (Sa)-2,3-Pentadiene, CAS 23190-25-2
  • (R)-3-Methylcyclobutene, CAS 20476-28-2
  • (S)-3-Methylcyclobutene, CAS 30334-81-7
  • (R)-2-Methyl-1-methylenecyclopropane
  • (S)-2-Methyl-1-methylenecyclopropane
  • (R)-1,3-Dimethylcyclopropene
  • (S)-1,3-Dimethylcyclopropene

Functional groups

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The formula may also represent a monovalent functional group derived from any hydrocarbon with formula C
5
H
9
by removal of one hydrogen atom; or a divalent group derived from C
5
H
10
minus two hydrogens; and so on.

See also

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