Terpineols have been isolated from a variety of sources such as cardamom, cajuput oil, pine oil, and petitgrain oil. Four isomers exist: α-, β-, γ-terpineol, and terpinen-4-ol.
Terpineols are found in a range of natural sources like cardamom, cajuput oil, pine oil, and petitgrain oil.  There are four distinct types of terpineols: α-, β-, γ-terpineol, and terpinen-4-ol.