2-Amino-3-cyano-4-nitro-5-(trifluoromethoxy)pyridine
3-(Chloromethyl)-4-(difluoromethyl)-5-(trifluoromethyl)pyridine-2-sulfonyl chloride
4,5-Dichloro-2-(difluoromethyl)pyridine-3-carbonyl chloride
5-Hydroxy-4-methoxy-3-(trifluoromethoxy)pyridine-2-carbonyl chloride