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