2-(tert-butyl)-5-cyano-6-oxo-1,6-dihydropyridine-3-carboxylic acid

2-dimethylaminomethylene-4,4-dimethyl-3-oxo-pentanoic acid ethyl ester

ethyl 5-cyano-1,6-dihydro-2-tert-butyl-6-oxo-3-pyridine carboxylate

频哪酮

氰乙酰胺