Content: protolimonoids; quassinoids; 7α,24,25-trihydroxy-3-oxo-apotirucalla-14,20(22)-dien-21,23-olide; 7α,24,25-trihydroxy-3-oxo-apotirucalla-1,14,20(22)-trien-21,23-olide, 21,23-epoxy-7α,20,21,24,25-pentahydroxyapotirucalla-14-en-3-one; quassinoids glaucarubolone, Δ13,18-dehydroglaucarubolone, glaucarubinone, glaucarubol, 2′-acetylglaucarubin, excelsin, ailanthinone; holocanthone.