Erythrin
Erythrin , noun
[Greek 'eryqro`s red.]
1.
(Chemistry) A colorless crystalline substance, C20H22O10, extracted from certain lichens, as the various species of Rocella. It is a derivative of orsellinic acid. So called because of certain red compounds derived from it. Called also erythric acid.
2.
(Mineralogy) See Erythrite, 2.
Also: Erythrine