2-Pdm-psoralen 2-Pyridyldithioethylmethylamidodiethoxyethane methylaminomethyltrimethylpsoralen 83353-04-2 Propanamide, N-methyl-N-(2-(2-(2-(methyl((2,5,9-trimethyl-7-oxo-7H-furo(3,2-g)(1)benzopyran-3-yl)methyl)amino)ethoxy)ethoxy)ethyl)-3-(2-pyridinyldithio)-