Ingenol 20-palmitate is a derivative of ingenol, a polycyclic diterpenoid ester derived from plants in the Euphorbiaceae family such as Euphorbia peplus. As a specialty chemical, it is primarily used in biochemical and pharmacological research to study protein kinase C (PKC) signaling pathways, cellular apoptosis, and inflammatory responses. Unlike ingenol mebutate (which is approved for actinic keratosis treatment), this 20-position ester analog is not clinically approved and serves as a research tool for investigating potential anticancer and immunomodulatory activities.