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