3,4-Dibromo-6-(difluoromethyl)pyridine-2-carboxylic acid
4-(Difluoromethyl)-3-(trifluoromethyl)pyridine-2-carboxylic acid
Methyl 2-(difluoromethyl)-6-(trifluoromethyl)pyridine-4-acetate
4-(Difluoromethyl)-2-(trifluoromethyl)pyridine-3-carboxylic acid