Methyl 4-bromo-2-(difluoromethyl)-6-(trifluoromethyl)pyridine-3-carboxylate
3-(Chloromethyl)-2-iodo-6-methoxy-4-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-5-methoxy-3-nitropyridine-2-sulfonyl chloride
Methyl 2-amino-6-(aminomethyl)-3-(difluoromethyl)pyridine-4-carboxylate