Methyl 4-(chloromethyl)-3-(difluoromethyl)-2-methoxypyridine-5-carboxylate
Methyl 4-(chloromethyl)-6-(difluoromethyl)-3-methoxypyridine-2-carboxylate
4-(Fluoromethyl)-2-iodo-5-(trifluoromethoxy)pyridine
Methyl 5-(chloromethyl)-3-(difluoromethyl)-4-methoxypyridine-2-carboxylate