7H-Furo[3,2-g][1]benzopyran-7-one; Furocoumarin; 3-(6-Hydroxy-5-benzofuranyl)-2-propenoic Acid δ-Lactone; 6,7-Furanocoumarin; Ficusin; Furo[2',3':7,6]coumarin; Furo[4',5':6,7]coumarin; NSC 404562; Psoralene

Psoralens are phytoalexins; they are used by plants in a defensive response to attacks by fungi and insects. They have also shown photosensitizing and phototoxic effects in animals and humans and have been used in photochemotherapy for management of vitiligo, psoriasis, and mycosis fungoides. Used as photochemical probe in biological systems.