Methyl 2,5-bis(perfluorophenyl)nicotinate
Methyl 6-chloro-5-(2,3-difluorophenyl)picolinate
Methyl 5-chloro-6-(2,3-difluorophenyl)picolinate
Methyl 3-chloro-6-(2,3-difluorophenyl)picolinate
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