What is an allylphenol?

Allylphenol is an organic compound.

Starting with Benzene. One of the hydrogens is replaced by an '-OH' functional group. The substance is now 'phenol'.

On an adjacent carbon to the hydroxy carbon, a propylene functional group is attached, with the alkene function furthest away from the phenol.

This is 2-allylphenol. There is also a p-allylhenol.