Ursolic acid
Names: Urson; Prunol; Malol; 3-beta-3-hydroxy-urs-12-ene-28-oic-acid.
Chemistry: a pentacyclic triterpenoid in the epicuticular waxes of apples, the peels of fruits,
Mirabilis jalapa, basil, bilberries, cranberries, elder flower, peppermint, rosemary, lavender, oregano, thyme, hawthorn, prunes; apple peels contain large quantities of ursolic acid and related compounds.