161369-34-2
→
~78%
141283-41-2
8-nitro-4-oxochromene-2-carbonitrile
110683-75-5
ethyl 8-nitro-4-oxochromene-2-carboxylate
33543-97-4
7-methyl-4-oxo-4H-1-Benzopyran-2-carbonitrile
+