Dichloromethane extracts of dried flowers of Calendula officinalis contain eight known bioactive triterpendiol monoesters, namely, faradiol-3-O-palmitate, faradiol-3-O-myristate, faradiol-3-O-laurate, arnidiol-3-O-palmitate, arnidiol-3-O-myristate, arnidiol-3-O-laurate, calenduladiol-3-O-palmitate