glucosinolate

noun

glu·​co·​sin·​o·​late ˌglü-kō-ˈsin-ə-ˌlāt 

: any of various bitter sulfur-containing glycosides found especially in cruciferous plants (as broccoli, cabbage, and mustard) that when hydrolyzed form bioactive compounds (as isothiocyanates) including some which are anticarcinogenic