121792-91-4
[2,5-Dibrom-3-thenyl]-malonsaeurediethylester
→
121792-92-5
3-(2,5-dibromothiophen-3-yl)propanoyl chloride
5650-52-2
4,5-二氢环戊并[b]噻吩-6-酮
121792-93-6
2,3-dibromo-4H-cyclopenta[b]thiophen-6(5H)-one