2-(Difluoromethyl)-4-methoxy-3-nitropyridine-6-sulfonyl chloride
Methyl 6-bromo-2-(chloromethyl)-4-(difluoromethyl)pyridine-3-carboxylate
5-(Difluoromethyl)-2-hydroxy-3-nitropyridine-4-acetic acid
4-Hydroxy-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride