Methyl 4-(difluoromethyl)-6-hydroxy-3-(trifluoromethyl)pyridine-2-carboxylate
4-(Difluoromethyl)-6-hydroxy-3-(trifluoromethyl)pyridine-2-acetic acid
2-(Difluoromethyl)-5-iodo-6-nitropyridine-3-sulfonyl chloride
3-(Difluoromethyl)-2-hydroxy-5-(trifluoromethyl)pyridine-6-acetic acid