Methyl 6-(difluoromethyl)-2-methoxy-3-methylpyridine-4-carboxylate
Methyl 2-(difluoromethyl)-5-methoxy-6-methylpyridine-3-carboxylate
Ethyl 3-(difluoromethyl)-2-methoxy-4-nitropyridine-5-acetate
3-(Difluoromethyl)-4-methoxy-6-methylpyridine-2-acetic acid