β-Pinene is a monoterpene, an organic compound found in plants. It is one of the two isomers of pinene, the other being α-pinene. It is colorless liquid soluble in alcohol, but not water. It has a woody-green pine-like smell. This is one of the most abundant compounds released by forest trees. If oxidized in air, the allylic products of the pinocarveol and myrtenol family prevail. Sources Many plants from many botanical families contain the compound, including: Cuminum cyminum Humulus lupulus Pinus pinaster Clausena anisata Cannabis sativa References Flavors Perfume ingredients Vinylidene compounds Monoterpenes Bicyclic compounds Cyclobutanes