Ethyl 2-(difluoromethyl)-3-methyl-5-nitropyridine-4-carboxylate
Methyl 3-(difluoromethyl)-2-methoxy-4-(trifluoromethyl)pyridine-5-acetate
5-(Difluoromethyl)-2-methyl-4-nitropyridine-3-acetic acid
4-(Difluoromethyl)-5-methoxy-3-(trifluoromethyl)pyridine-2-acetic acid