1-甲基-6-氧代-1,6-二氢吡啶-3-羧酸甲酯

1-甲基-6-氧代-1,6-二氢吡啶-3-羧酸乙酯

Ethyl-1-ethyl-1,6-dihydro-6-oxopyridin-3-carboxylat

1-ethyl-5-(carbomethoxy)-2(1H)-pyridinone

1-甲基-2-吡啶酮