上面一个F两个F都行，具体请报价留言！

5-Bromo-3,4-difluoro-thiophene-2-carbaldehyde

C5HBrF2OS
Exact Mass: 225.89
Mol. Wt.: 227.03
m/e: 227.89 (100.0%), 225.89 (98.1%), 228.89 (6.4%), 226.89 (6.3%), 229.88 (4.2%)
C, 26.45; H, 0.44; Br, 35.20; F, 16.74; O, 7.05; S, 14.12