Methyl 2-(chloromethyl)-4-(difluoromethyl)-3-hydroxypyridine-5-carboxylate
5-Amino-3-(bromomethyl)-4-(difluoromethyl)pyridine-2-carboxylic acid
2-Amino-6-(difluoromethyl)-5-fluoropyridine-3-sulfonyl chloride
Ethyl 3-(chloromethyl)-6-cyano-2-(trifluoromethoxy)pyridine-5-carboxylate