ergothioneine

er·go·thi·o·ne·ine

(er'gō-thī'ō-nē'in), The betaine of a sulfur-containing derivative of histidine, present in blood and other mammalian tissue and in ergot. Synonym(s): thiolhistidylbetaine, thioneine

ergothioneine

(ĕr-gō-thī′ō-nēn) C9H15N3O2S·2H2O; thiolhistidine-betaine. A compound containing crystalline sulfur, it is found in ergot and red blood cells.