C18H18O2
# C18H18O2

The molecular formula $C_{18}H_{18}O_2$ (molar mass 266.33 g/mol, exact mass 266.13068) may refer to:

* Dienestrol, a synthetic estrogen
* 2,8-Dihydroxyhexahydrochrysene, a synthetic estrogen
* Equilenin, a horse steroid
* Honokiol, a lignan
* Juncusol, a 9,10-dihydrophrenathrene found in Juncus species
* Magnolol, a lignan
