6-Chloro-3-(difluoromethyl)-4-nitropyridine-2-sulfonamide
6-(Aminomethyl)-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-carboxylic acid
2-Amino-5-(difluoromethyl)-3-nitropyridine-4-sulfonamide
6-(Aminomethyl)-3-chloro-4-(difluoromethyl)pyridine-2-carboxylic acid