Xanthin
Xanthin , noun
[Greek xanqo`s yellow.]
1.
same as xanthine.
2.
(Chemistry) A yellow insoluble coloring matter extracted from yellow flowers; specifically, the coloring matter of madder.
3.
(Chemistry) One of the gaseous or volatile decomposition products of the xanthates, and probably identical with carbon disulphide. [Obsolete]