Methyl 2-chloro-3-cyano-4-(trifluoromethoxy)pyridine-6-carboxylate
5-(Difluoromethyl)-2,3-dimethoxypyridine-4-sulfonyl chloride
Methyl 2-fluoro-3-(fluoromethyl)-6-(trifluoromethoxy)pyridine-5-carboxylate
2-Amino-5-methyl-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride