2,4-二氰基-3-乙基-3-甲基戊二酰亚胺

1,3,5,6-tetramethylpyrido[2,3-d]pyrimidine-2,4-dione

5-ethyl-1,3-dimethylpyrido[2,3-d]pyrimidine-2,4-dione

4-(3,4-dihydroxy-5-nitrophenyl)-3-methylbut-3-en-2-one

3-甲基-2,4-壬烷二酮