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