92873-11-5
→
~90%
92964-95-9
dimethyl acenaphthylene-4,5-dicarboxylate
5699-00-3
1,2-dihydro-6-oxacyclopenta[cd]phenalene-5,7-dione
4599-96-6
dimethyl 1,2-dihydroacenaphthylene-5,6-dicarboxylate