5-Amino-3-(difluoromethyl)-4-iodopyridine-2-sulfonamide
5-(Difluoromethyl)-4-fluoro-2-hydroxypyridine-3-sulfonyl chloride
Ethyl 3-bromo-5-(difluoromethyl)-4-nitropyridine-2-acetate
2-Fluoro-4-(trifluoromethoxy)pyridine-6-sulfonyl chloride
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