Methyl 2-(difluoromethyl)-3-methyl-4-(trifluoromethyl)pyridine-5-carboxylate
6-(Difluoromethyl)-3-methyl-4-(trifluoromethyl)pyridine-2-carboxylic acid
2-(Difluoromethyl)-5-methyl-3-(trifluoromethyl)pyridine-6-carboxylic acid
5-(Difluoromethyl)-2-methyl-4-(trifluoromethyl)pyridine-3-carboxylic acid