3-(Difluoromethyl)-6-nitro-2-(trifluoromethyl)pyridine-4-sulfonyl chloride
3-(Difluoromethyl)-5-nitro-2-(trifluoromethyl)pyridine-4-sulfonyl chloride
6-(Difluoromethyl)-4-methyl-3-nitropyridine-2-carbonyl chloride
Ethyl 3-hydroxy-5-(trifluoromethyl)pyridine-2-acetate