Ethyl 2-chloro-5-(2,3-dichlorophenyl)isonicotinate
Ethyl 6-(2,3-dichlorophenyl)-2-fluoronicotinate
Ethyl 2-amino-5-(2,3-dichlorophenyl)isonicotinate
Ethyl 3-(2,3-dichlorophenyl)-5-fluoroisonicotinate
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