frangulic
Fran*gu"lic, Fran`gu*lin"ic, a. (Chem.) Defn: Pertaining to, or drived from, frangulin, or a species (Rhamnus Frangula) of the buckthorn. Frangulinic acid (Chem.), a yellow crystalline substance, resembling alizarin, and obtained by the decomposition of frangulin.