Ethyl 2-methyl-4-(trifluoromethoxy)pyridine-5-carboxylate
2-Amino-3-(difluoromethyl)-6-methoxypyridine-5-sulfonyl chloride
2-Fluoro-6-(pyridin-4-yl)benzene-1-sulfonyl chloride
6-(Difluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine-3-carbonyl chloride