1-Bromo-1-(difluoromethoxy)-2,2,2-trifluoroethane 32778-10-2 Difluoromethyl-1-bromo-2,2,2-trifluoroethyl ether Ethane, 2-bromo-2-(difluoromethoxy)-1,1,1-trifluoro- I 537 I-537