63177-18-4
2-carboxy-1-cyclohexeneacetic acid
→
~33%
3711-74-8
5,6,7,8-四氢-4H-异色烯-1,3-二酮
56955-19-2
ethyl 2-(2-oxo-1-cyano-2-ethoxyethylidene)-cyclohexanecarboxylate