21636-03-3
ethyl 5-cyano-3-methyl-1H-pyrrole-2-carboxylate
→
~74%
26018-30-4
ethyl 5-formyl-3-methyl-1H-pyrrole-2-carboxylate
2199-44-2
3,5-二甲基-1H-吡咯-2-甲酸乙酯
~71%
74-90-8
氰化氢