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2-CYANO-5-ETHOXYCARBONYLPYRIDINE ETHYL 6-BROMO-4-CHLORO-3-QUINOLINECARBOXYLATE Ethyl 4-chloro-7-methoxyquinoline- 3-carboxylate ethyl 2-bromo-4H-thieno[3,2-b]pyrrole-5-carboxylate 5-BROMO-PYRAZOLO[1,5-A]PYRIDINE-3-CARBOXYLIC ACID ETHYL ESTER 4,6-Dihydroxy-5-nitropyridine-3-carboxylic acid ethyl ester