109104-45-2 3,4-Dihydro-1'-methylspiro(naphthalene-2(1H),3'-pyrrolidine)-2',5'-dione 4-21-00-05530 (Beilstein Handbook Reference) 7,8-Benzo-2-methyl-2-azaspiro(4.5)decane-1,3-dione BRN 0015322 S.2-771 Spiro(naphthalene-2(1H),3'-pyrrolidine)-2',5'-dione, 3,4-dihydro-1'-methyl-