ALOIN

n. A?l’o-i?n, Lat., aloinum. Fr., aloïne. Ger., Aloïn. It., Sp., aloin a. Syn.: bitter of aloes, A lucoside contained in and probably constitut the active principle of aloes. There appear to be Several principles of this sort derived from different. varieties of aloes, and named barbaloin, Cy7H90; (from Barb a does aloes), nataloin, C,4H,g07 (from Natal’ aloes), so calo in, Cys-Hıs07 (from Socotrine aloes), and zanaloin (from Zanzibar aloes). These principles appear to form an homologous series, and are regarded Redertwatives and probably partake of the nature of, substituted phenols. A. is a yellowish crystalline substance, and is official in the Br. Ph. It is given in dosés of from 1 to 2 grains and has the same effect as aloes, but is le griping. See BARBALOIN, NATALOIN. So cALO IN, and ZANALOIN. [B, 5, 81; L, 116.] ALOINÆ (Lat.), n. f. pl A?l(a31)-0-i(e)'ne(na?-e®), A snborder of liliaceous plants made by Link, comprising Agave, Aloe, and one or two allied genera. [B, 170.]