text: *2-chloropropylene
  *propenylbenzene (β-methylstyrene).  
  Many phenylpropanoids and their derivatives feature derivatives of propenylbenzene:
  *Anethole
  *Asarone
  *Carpacin
  *Coniferyl alcohol
  *Isoeugenol
  *Isosafrole
  *Methyl isoeugenol
  *Pseudoisoeugenol