5-(Difluoromethyl)-3-methoxy-2-nitropyridine-4-sulfonyl chloride
3-(Difluoromethyl)-2-methoxy-5-nitropyridine-4-sulfonyl chloride
Ethyl 2,6-dibromo-3-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 2-amino-3-fluoro-6-(trifluoromethoxy)pyridine-4-carboxylate