2-Propenoic acid, 3-(6-hydroxy-5-benzofuranyl)-, delta-lactone 5-19-04-00445 (Beilstein Handbook Reference) 5-Benzofuranacrylic acid, 6-hydroxy-, delta-lactone 6-Hydroxy-5-benzofuranacrylic acid beta-lactone 66-97-7 7H-Furo(3,2-g)(1)benzopyran-7-one BRN 0152784 CCRIS 4343 EINECS 200-639-7 Ficusin Furo(2',3',7,6)coumarin Furo(3,2-g)-coumarin Furo(4',5',6,7)coumarin Furocoumarin HSDB 3528 NSC 404562 PSORALEN Psolaren Psoralene Psorline-P