7559-81-1
(2-氯甲基)-5-羟基-4H-吡喃-4-酮
→
~86%
60923-13-9
2-(azidomethyl)-5-hydroxy-4H-Pyran-4-one
~40%
644-46-2
5-hydroxy-2-methylpyran-4-one
+
501-30-4
曲酸