4,9-Dimethoxy-7H-furo(3,2-G) (1)benzopyran-7-one 482-27-9 5,8-Dimethoxypsoralen 5,8-Dimethoxypsoralene 7H-Furo(3,2-g)(1)benzopyran-7-one, 4,9-dimethoxy- (8CI)(9CI) CCRIS 4347 Isopimpinellin NSC 217988 NSC 401288