3-(Difluoromethyl)-2-fluoro-4-nitropyridine-5-sulfonamide
4-(Chloromethyl)-3-(difluoromethyl)-2-iodo-6-nitropyridine
2-(Aminomethyl)-3-(difluoromethyl)-4-(trifluoromethyl)pyridine
2-Amino-4-(difluoromethyl)-6-fluoropyridine-3-acetic acid
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