同屬植物橙花開口箭 Tupistra aurantiacaWall. ex Bak.根含螺甾烷皁甙元(spirostane sapogenins):3-表羅斯考皁甙元(3-epiruscogenin),3-表-新羅斯考皁甙元(3-epineo-ruscogenin),25(27)-螺甾烯四醇[25(27)-ranmogenin]A-C,螺甾四醇(ranmogenin)D,25(27)-螺甾烯五醇[25(27)-pentrogenin ],開口箭皁甙元(tupisgenin),酸橙皁甙元(auranti-genin),1β,2β,3β,4β,5β,7α-六羥基螺甾-25(27)-烯-6-酮[1β,2β,3β,4β,5β,7α-hexahydroxyspirost-25(27)en-6-one)。