曲酸

苯甲酰氯

(6S)-6-[(苯甲酰氧基)甲基]-3-氧代-3,6-二氢-2H-吡喃-4-基苯甲酸酯

(5-acetyloxy-4-oxopyran-2-yl)methyl acetate

(2Ξ,6S)-4-benzoyloxy-6-benzoyloximethyl-2-chloro-6H-pyran-3-one