2,(4-甲酰-3-甲基噻吩-2-基)乙基醋酸盐

6-hydroxy-5-(2-hydroxyethyl)-4-methyl-2-oxo-1H-pyridine-3-carbonitrile

2-甲基-4,5-二氢呋喃-3-羧酸甲酯

α-甲基-γ-丁内酯

2-氯-3-氧代戊基乙酸酯