Ethyl 3-(hydroxymethyl)-1H-pyrrole-2-carboxylate

ethyl 2-isocyano-3-thiophen-2-ylprop-2-enoate

2,5-dihydro-1H-1,2,4-triazin-6-one

1-氨基-3-异丙基-1H-吡咯-2,4-二羧酸二乙酯

2-isocyano-N-propan-2-ylacetamide