482-44-0 5-Benzofuranacrylic acid, 6-hydroxy-7-[(3-methyl-2-butenyl)oxy]-, .delta.-lactone 7H-Furo[3,2-g][1]benzopyran-7-one, 9-[(3-methyl-2-butenyl)oxy]- 8-Isopentenyloxypsoralene 9-(3-Methylbut-2-enyloxy)furo[3,2-g]chromen-7-one Ammidin Imperatorin Marmelosin NSC402949 Pentosalen WLN: T C566 DO LVOTJ BO2UY1&1