ergotoxine

noun

er·​go·​tox·​ine ˌər-gə-ˈtäk-ˌsēn  -sən 

1

: a crystalline pharmacologically active alkaloid C₃₅H₃₉N₅O₅ from ergot that is stereoisomeric with ergotinine

2

: a mixture of isomorphous pharmacologically active alkaloids from ergot

called also ergotoxine group