Eucalyptus Terpenes is extracted from eucalyptus oil. It is a colorless liquid that is mainly composed of terpene and cymene. Eucalyptus Terpenes is widely used in the aromatic and pharmaceutical industry.
There up to 85%~94% alpha-Pinene can be extracted from Eucalytus Terpenes.
You else can learn more about Eucalyptus on Botanical.com