2-哌啶甲酰胺

N-(4-methylphenyl)pyridine-2-carboxamide

1-oxidopyridin-1-ium-2-carboxamide

N-(3-oxobutanoyl)pyridine-2-carboxamide

N-(2,6-dimethyl-4-oxopyran-3-carbonyl)pyridine-2-carboxamide