2H-Furo(2,3-h)(1)benzopyran-2-one, 9-aminomethyl-4,8-dimethyl-, hydrochloride 4'-Aminomethyl-4,5'-dimethylangelicin hydrochloride 75663-42-2 9-Aminomethyl-4,8-dimethyl-2H-furo(2,3-h)-1-benzopyran-2-one hydrochloride