Ethyl 4-amino-3-bromo-2-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 4-amino-6-bromo-3-(trifluoromethoxy)pyridine-2-carboxylate
3,6-Difluoro-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
2,5-Difluoro-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride