Methyl 6-(difluoromethyl)-4-methoxy-3-nitropyridine-2-acetate
Methyl 2-(difluoromethyl)-4-methoxy-3-nitropyridine-6-acetate
4-(Difluoromethyl)-6-methoxy-2-(trifluoromethyl)pyridine-3-carboxylic acid
4-(Difluoromethyl)-6-methoxy-3-(trifluoromethyl)pyridine-2-carboxylic acid