6-dimethoxymethyl-4-methyl-2-oxo-1-propyn-2-ynyl-1,2-dihydropyridine-3-carbonitrile

6-(二甲氧基甲基)-4-甲基-2-氧代-1,2-二氢-3-吡啶甲腈

2-[(4-methylphenyl)iminomethyl]aniline

邻氨基苯甲酸

ethyl 5-cyano-4-methyl-6-oxo-1H-pyridine-2-carboxylate