4-(Difluoromethyl)-2,6-dimethoxypyridine-3-acetic acid
4-Amino-5-chloro-3-(difluoromethyl)-2-iodopyridine
2-(Difluoromethyl)-3,6-dimethoxypyridine-5-acetic acid
Ethyl 3-amino-2-bromo-5-(difluoromethyl)pyridine-4-acetate
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