Methyl 3-amino-5-(difluoromethyl)-2-methylpyridine-6-carboxylate
2-(Difluoromethyl)-5-nitro-3-(trifluoromethyl)pyridine-6-sulfonyl chloride
Methyl 2-fluoro-5-methoxyisonicotinate
4-Bromo-3-fluoropyridine-5-sulfonyl chloride
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