Ethyl 4,6-dihydroxy-3-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 4-bromo-3-chloro-5-(difluoromethyl)pyridine-2-carboxylate
4,4'-Dimethyl-[2,2'-bipyridine] 1-oxide
4-(Chloromethyl)-2-(difluoromethyl)-5-(trifluoromethoxy)pyridine-3-carboxylic acid