2-Amino-6-cyano-3-(difluoromethyl)-5-nitropyridine
4-(Difluoromethyl)-2-methoxy-5-nitropyridine-3-sulfonyl chloride
Methyl 5-hydroxy-2-iodo-3-(trifluoromethoxy)pyridine-4-carboxylate
3-Amino-2-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-5-acetic acid