Friedrich A. Flückiger, Pharmacographia (1879)
“ Walz thus obtained about 1⁄4 per cent. of a yellowish mass or tufts, which he considered as possessing crystalline structure and to which he gave the name Colocynthin. He assigns to it the formula C56H84O23, which in our opinion requires further investigation. Colocynthin is a violent purgative; it is decomposed according to Walz by boiling dilute hydrochloric acid, and then yields Colocyntheïn, C44H64O13, and grape sugar. The same chemist termed Colocynthitin that part of the alcoholic extract of colocynth which is soluble in ether but not in water. ”
