(S)-(-)-Perillyl alcohol, a monoterpene, is an orally active farnesyl transferase and geranylgeranyl transferase inhibitor. (S)-(-)-Perillyl alcohol up-regulates the mannose-6-phosphate receptor, facilitating TGF-beta1 activation and cytostasis,. (S)-(-)-Perillyl alcohol induces apoptosis in cancer cells, modulates cyclin D1 and AP-1 activity. (S)-(-)-Perillyl alcohol exhibits antitumor activity against sarcoma tumors in mice. (S)-(-)-Perillyl alcohol can be used for the research of squamous cell carcinoma of the esophagus and sarcoma 180[1][2].