C21H22O4
# C21H22O4

The molecular formula $C_{21}H_{22}O_4$ (molar mass: 338.39 g/mol, exact mass: 338.1518 u) may refer to:

* Bergamottin, a natural furanocoumarin
* Licochalcone A, a polyphenol
* Taxamairin A
