Methyl 5-(difluoromethyl)-3-(trifluoromethyl)pyridine-2-carboxylate
Methyl 5-(difluoromethyl)-4-(trifluoromethyl)pyridine-2-carboxylate
3,5-Dibromo-2-(difluoromethyl)pyridine-4-sulfonyl chloride
3,4-Dibromo-2-(difluoromethyl)pyridine-5-sulfonyl chloride