2,4-二氰基-3-乙基-3-甲基戊二酰亚胺

5-ethyl-2,5-dimethyl-cyclohexane-1,3-dione

硫酸

4-ethyl-5-cyano-2-imino-4-methyl-6-oxo-piperidine-3-carboxylic acid amide