Ethyl 2-hydroxy-4-(trifluoromethyl)nicotinate
Ethyl 3-hydroxy-2-(trifluoromethyl)isonicotinate
Ethyl 2-hydroxy-6-(trifluoromethyl)isonicotinate
Ethyl 2-hydroxy-5-(trifluoromethyl)isonicotinate
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