VAIN

n. I'va3-i2n. Fr., i., ivaine. A bitter substance obtained from the alcoholic extract of Achillea moschata. Its emformula is C8H J4O, and its rational formula perhaps Eirical'j4H42O3. It is a yellow ma , insoluble in water, soluble in alcohol. [B, 2, 93; " Proc. of the Am. Pharm. A oc.," xxix (a, 39).] [s. 505]