5-Amino-4-(difluoromethyl)-3-methoxypyridine-2-sulfonyl chloride
3-Chloro-4-hydroxy-6-(trifluoromethoxy)pyridine-2-sulfonyl chloride
Methyl 4-hydroxy-3-methylpyridine-5-acetate
2-(Difluoromethyl)-4-nitro-3-(trifluoromethyl)pyridine-5-sulfonyl chloride