Methyl 2-(difluoromethyl)-3-hydroxy-5-iodopyridine-6-acetate
4-(Difluoromethyl)-3-hydroxy-2-iodopyridine-5-acetic acid
3-Chloro-4-chloromethyl-5-hydroxypyridine
2-Chloro-3-chloromethyl-4-hydroxypyridine
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