3',4'-Dihydro-7'-methoxyspiro(imidazolidine-4,2'(1'H)-naphthalene)-2,5-dione 35485-63-3 4-25-00-00359 (Beilstein Handbook Reference) BRN 0023132 S.2-792 Spiro(imidazolidine-4,2'(1'H)-naphthalene)-2,5-dione, 3',4'-dihydro-7'-methoxy-