Synonyms: 1,2-Benzenediol,4-(2-propenyl)- (9CI); Pyrocatechol, 4-allyl- (6CI,7CI,8CI);1,2-Dihydroxy-4-allylbenzene; 1-Allyl-3,4-dihydroxybenzene;4-(2'-Propenyl)-1,2-benzenediol; 4-Allyl-1,2-dihydroxybenzene; 4-Allylcatechol;4-Allylpyrocatechol; Hydroxychavicol