2-Amino-6-(aminomethyl)-3-(difluoromethyl)pyridine-4-acetic acid
Methyl 3-amino-5-cyano-6-(difluoromethyl)pyridine-2-carboxylate
2-Bromo-4-(difluoromethyl)-6-nitropyridine-3-sulfonyl chloride
Ethyl 5-chloro-4-fluoro-3-(trifluoromethoxy)pyridine-2-carboxylate