Ethyl 5-chloro-3-(2,4-dichlorophenyl)picolinate
Ethyl 2-chloro-6-(2,4-dichlorophenyl)isonicotinate
Ethyl 5-chloro-2-(2,4-dichlorophenyl)isonicotinate
Ethyl 3-chloro-2-(2,4-dichlorophenyl)isonicotinate
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