Methyl 2-amino-3-bromo-4-(difluoromethyl)pyridine-5-acetate
3-(Aminomethyl)-2-(difluoromethyl)-6-hydroxypyridine-4-carboxaldehyde
Ethyl 3-chloro-6-methoxy-4-(trifluoromethoxy)pyridine-2-carboxylate
3-(Chloromethyl)-5-fluoro-4-(trifluoromethoxy)pyridine-2-carboxaldehyde