1-[6-(3-oxobutanoyl)pyridin-2-yl]butane-1,3-dione

6-N-tert-butylpyridine-2,6-dicarboxamide

2-N-tert-butyl-3-(methoxymethylcarbamothioyl)pyridine-2,6-dicarboxamide

甲基6-(氯甲酰基)-2-吡啶羧酸酯

6-甲酰基-(9CI)-2-吡啶羧酸