Methyl 4-(difluoromethyl)-6-methoxy-2-methylpyridine-3-acetate
Methyl 4-(difluoromethyl)-6-methoxy-3-methylpyridine-2-acetate
Methyl 4-(difluoromethyl)-2-methoxy-3-methylpyridine-6-acetate
Methyl 5-(difluoromethyl)-3-methoxy-2-methylpyridine-4-acetate