27473-61-6
1',3'-二氢螺[咪唑烷-4,2'-茚]-2,5-二酮
→
33584-66-6
SPIRO(5-NITROINDANE)-2,5'-HYDANTOIN
+
1240303-22-3
33584-67-7
5-aminospiro[1,3-dihydroindene-2,5'-imidazolidine]-2',4'-dione