5-Bromo-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
2-(Difluoromethyl)-4-methyl-6-(trifluoromethoxy)pyridine-3-carboxylic acid
2-(Difluoromethyl)-4-methyl-3-(trifluoromethoxy)pyridine-6-carboxylic acid
2-(Difluoromethyl)-3-methyl-4-(trifluoromethoxy)pyridine-6-carboxylic acid