9-hydroxy-2,3-dihydro-furo[3,2-g]chromen-7-one, Dihydro-8-hydroxypsoralen, 2,3-Dihydroxanthotoxol, EINECS 268-548-5, 7H-Furo(3,2-g)(1)benzopyran-7-one,2,3-dihydro-9-hydroxy, xanthotoxol, 4',5'-dihydro-8-hydroxypsoralen, 2,3-Dihydro-9-hydroxy-7H-furo(3,2-g)(1)benzopyran-7-one, 9-hydroxy-2,3-dihydro-7h-furo[3,2-g]chromen-7-one, 9-Hydroxy-2,3-dihydro-furo[3,2-g]chromen-7-on