The active principle in aloes is aloin; of jalap, jalapin; of white hellebore, veratria; and of colchicum, colchicin.
"Aids to Forensic Medicine and Toxicology" by W. G. Aitchison Robertson
Castor oil, senna, jalap, jalapine, and scammony are simple aperients.
"The Mother's Manual of Children's Diseases" by Charles West, M.D.
It is insoluble in ether, and is more active than jalapin.
"Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 2" by Various