2-氨基茚满-2-甲酸

N-叔丁氧羰基-2-氨基茚满-2-羧酸

5'-硝基-螺[咪唑烷-4,2'-茚满]-2,5-二酮

4'-nitro-1',3'-dihydrospiro[imidazolidine-4,2'-indene]-2,5-dione

5-aminospiro[1,3-dihydroindene-2,5'-imidazolidine]-2',4'-dione