Methyl 3-(difluoromethyl)-2-iodo-4-methoxypyridine-5-acetate
4-Cyano-2-(difluoromethyl)-5-nitropyridine-3-carbonyl chloride
4-(Difluoromethyl)-3-nitro-2-(trifluoromethyl)pyridine-5-sulfonyl chloride
3-(Aminomethyl)-6-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride