Ethyl 6-(bromomethyl)-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-acetate
5-(Bromomethyl)-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride
Ethyl 6-(bromomethyl)-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-acetate
4-(Bromomethyl)-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride