Ethyl 2-bromo-4-(difluoromethyl)pyridine-5-acetate
4-(Bromomethyl)-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-carboxylic acid
Ethyl 2-bromo-3-(difluoromethyl)pyridine-5-acetate
4-(Bromomethyl)-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-carboxylic acid