2-氰基-2-羟基亚氨基乙酰胺钠

3-羟基-5,5-二甲基环己-2-烯-1-酮

3-(二甲氨基)-5,5-二甲基-2-环己烯-1-酮

6-dimethylamino-2-oxo-1,2-dihydro-pyridine-3-carbonitrile

6-hydroxy-5-(2-hydroxyethyl)-4-methyl-2-oxo-1H-pyridine-3-carbonitrile