Ethyl 2-amino-3-(difluoromethyl)-5-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 3-bromo-2-cyano-5-(trifluoromethoxy)pyridine-6-carboxylate
2-Bromo-4-chloro-6-iodo-3-(trifluoromethoxy)pyridine
3-Amino-6-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-acetic acid