N-formylacetoacetamide

N-formyl-2,6-dimethyl-4-oxopyran-3-carboxamide

2,5-二甲基-1-苯基吡咯-3-羰醛

2,5-dimethyl-1-phenyl-pyrrole-3,4-dicarbaldehyde

4-N-methyl-5-phenyldiazenylpyrimidine-4,6-diamine