3-(Aminomethyl)-2,5,9-trimethyl-7H-furo(3,2-g)(1)benzopyran-7-one hydrochloride 62442-61-9 64358-50-5 7H-Furo(3,2-g)(1)benzopyran-7-one, 3-(aminomethyl)-2,5,9-trimethyl-, hydrochloride NSC 291836