Ethyl 2-(difluoromethyl)-3,6-dimethoxypyridine-4-carboxylate
4-(Chloromethyl)-2-(difluoromethyl)-3,5-dimethoxypyridine
Ethyl 3-(difluoromethyl)-2,5-dimethoxypyridine-6-carboxylate
2-(Chloromethyl)-3-(difluoromethyl)-4,5-dimethoxypyridine
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