Methyl 3-(2,3-difluorophenyl)-6-fluoropicolinate
Methyl 3-(2,3-difluorophenyl)-5-fluoropicolinate
Methyl 6-(2,3-difluorophenyl)-5-fluoronicotinate
Methyl 6-(2,3-difluorophenyl)-2-fluoronicotinate
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