Ethyl 2-(3,4-dichlorophenyl)-3-fluoroisonicotinate
Ethyl 3-chloro-5-(3,4-dichlorophenyl)picolinate
Ethyl 5-(2,6-dichlorophenyl)-6-fluoronicotinate
Ethyl 3-(2,3-difluorophenyl)-6-fluoropicolinate
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