Ethyl 2-(2,3-difluorophenyl)-6-methylnicotinate
Ethyl 2-(2,3-difluorophenyl)-5-methylnicotinate
Ethyl 2-(2,3-difluorophenyl)-4-methylnicotinate
Ethyl 3-(2,3-difluorophenyl)-2-methylisonicotinate
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