Orgaaniline hape, mis sisaldab karboksüülrühma (-COOH) ning ei ole hüdroksü-, amino- ega rasvhape (nt sidrunhape, bensoehape, sorbiinhape).
C30 terpenoid; its glycosides are triterpene saponins (e.g. asiatic acid in asiaticoside, glycyrrhetinic acid in glycyrrhizic acid).