| 释义 |
jalapin Chem.|ˈdʒæləpɪn|
[f. mod.L. jalāpa (see prec.) + -in.]
A glucoside resin, one of the purgative principles of officinal jalap and allied plants; the resin of jalap-stalks. So jaˈlapic a. in jalapic acid, C68H59O35, an acid produced by dissolving jalapin in aqueous solutions of the alkalis or alkaline earths. Its salts are ˈjalapates.
1832Encycl. Brit. (ed. 7) VI. 467/1 Jalappin..was first obtained by Mr. Hume in 1824. 1865–72Watts Dict. Chem. III. 439 Jalapin is a colourless amorphous resin, translucent when in thin plates. Ibid. 437 Jalapate of lead..Hydrate of lead dissolves in boiling aqueous jalapic acid, forming an amorphous, easily soluble salt. |