3-(Difluoromethyl)-2-nitropyridine-4-sulfonyl chloride
6-(Difluoromethyl)-2-methoxy-3-nitropyridine-4-sulfonyl chloride
5-Hydroxymethyl-3-methyl-2-(trifluoromethyl)pyridine
Methyl 3-cyano-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-carboxylate