2-Chloro-3-(difluoromethyl)-6-hydroxypyridine-4-sulfonyl chloride
2-Chloro-3-cyano-5-(difluoromethyl)pyridine-6-carbonyl chloride
3-(Difluoromethyl)-2-methoxy-5-nitropyridine-4-carbonyl chloride
5-Amino-2-(chloromethyl)-3-(difluoromethyl)-4-(trifluoromethyl)pyridine