2-氨基-4,5,6,7-四氢-4-苯并噻唑羧酸乙酯

DL-赖氨酸

ethyl penta-2,4-dienoate

1,2,3,4-四氢-9-吖啶酮

ethyl 3-but-3-enyl-2-oxocyclohexane-1-carboxylate