131305-27-6
4-Chloro-5,6-dihydro-2H-pyran-3-carboxaldehyde
+
623-51-8
巯基乙酸乙酯
→
623573-71-7
6,7-二氢-4H-噻吩并[3,2-c]吡喃-2-羧酸乙酯