Ethyl 3,4-diamino-2-(difluoromethyl)pyridine-5-carboxylate
Ethyl 2-(bromomethyl)-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylate
4-Chloro-2-hydroxypyridine-3-acetic acid
Ethyl 6-amino-3-(fluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylate