5-Bromo-2-nitro-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride
Ethyl 4-bromo-5-cyano-3-(trifluoromethoxy)pyridine-2-carboxylate
2-(Difluoromethyl)-3,5-dimethoxypyridine-4-carbonyl chloride
2-Cyano-3-iodo-5-(trifluoromethoxy)pyridine-4-carbonyl chloride