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 ethyl 4-hydroxy-1,7-dimethyl-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate ethyl 4H-thieno[2,3-d]pyrrole-5-carboxylate ethyl 4-formyl-3,5-dimethyl-1H-pyrrole-2-carboxylate ethyl 4-formyl-2,5-dimethyl-1-phenyl-1H-pyrrole-3-carboxylate
 Ethyl 4-formyl-2,5-dimethyl-1-(2-thienylmethyl)-1H-pyrrole-3-carboxylate Ethyl 4-formyl-1H-pyrrole-2-carboxylate Ethyl 4-Fluoropiperidine-4-carboxylate Hydrochloride Ethyl 4-Fluoropiperidine-4-carboxylate
 Ethyl 4-fluorobenzoylacetate Ethyl 4-fluorobenzoate ethyl 4-fluorobenzo[b]thiophene-2-carboxylate Ethyl 4-fluoro-3-nitrobenzoate
 Ethyl 4-Fluoro-2-nitro-5-(1-pyrazolyl)benzoate ethyl 4-fluoro-2-methyl-1H-indole-3-carboxylate Ethyl 4-etoxybenzoate Ethyl 4-Ethynylbenzoate
 ethyl 4-ethyl-3-iodobenzoate Ethyl 4-ethyl-3,5-dimethyl-1H-pyrrole-2-carboxylate ethyl 4-ethoxy-6-methylpyridine-3-carboxylate ethyl 4-ethoxy-3-iodobenzoate
 Ethyl 4-ethoxy-2-hydroxybenzoate Ethyl 4-dimethylaminobenzoate Ethyl 4-dimethylamino-2-oxo-3-butenoate Ethyl 4-Cyclopropyl-1,3-thiazole-2-carboxylate
 Ethyl 4-Cyanopiperidine-1-carboxylate Ethyl 4-cyanophenylacetate Ethyl 4-cyanobenzoate ethyl 4-cyano-5-(methylsulfanyl)thiophene-2-carboxylate
 Ethyl 4-chlorothieno[3,2-d]pyrimidine-6-carboxylate ETHYL 4-CHLOROTHIENO[2,3-B]PYRIDINE-5-CARBOXYLATE Ethyl 4-chlorothiazole-5-carboxylate ethyl 4-chloroquinoline-3-carboxylate
 Ethyl 4-chloroquinoline-2-carboxylate Ethyl 4-chloroquinazoline-6-carboxylate Ethyl 4-chloroquinazoline-2-carboxylate Ethyl 4-chloropyrrolo[1,2-f][1,2,4]triazine-6-carboxylate
 ethyl 4-chloropyrrolo[1,2-f][1,2,4]triazine-2-carboxylate Ethyl 4-chlorophenylacetate Ethyl 4-chloronicotinate Ethyl 4-chlorobenzoylformate
 ETHYL 4-CHLOROBENZOATE Ethyl 4-chloroacetoacetate Ethyl 4-chloro-8-methylquinoline-3-carboxylate ethyl 4-chloro-8-iodoquinoline-3-carboxylate
 ethyl 4-chloro-8-fluoroquinoline-3-carboxylate ethyl 4-chloro-8-cyanoquinoline-3-carboxylate Ethyl 4-chloro-7-methoxyquinazoline-2-carboxylate ethyl 4-chloro-7H-pyrrolo[2,3-d]pyrimidine-5-carboxylate
 Ethyl 4-chloro-7-fluoroquinazoline-2-carboxylate Ethyl 4-chloro-6-methylquinoline-3-carboxylate Ethyl 4-chloro-6-methyl-2-quinazolinecarboxylate Ethyl 4-Chloro-6-methyl-2-(methylthio)pyrimidine-5-carboxylate
 Ethyl 4-chloro-6-methoxyquinazoline-2-carboxylate ethyl 4-chloro-6-methoxy-3-quinolinecarboxylate Ethyl 4-chloro-6-fluoroquinoline-3-carboxylate ethyl 4-chloro-6,8-dimethylquinoline-3-carboxylate
 Ethyl 4-chloro-6,8-difluoroquinoline-3-carboxylate Ethyl 4-chloro-6,7-dimethoxyquinazoline-2-carboxylate Ethyl 4-chloro-5-methylpyrrolo[1,2-f][1,2,4]triazine-6-carboxylate ethyl 4-chloro-5-methyl-7-phenyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylate
 Ethyl 4-chloro-5H-pyrrolo[3,2-d]pyrimidine-7-carboxylate Ethyl 4-chloro-5-ethylpyrrolo[1,2-f][1,2,4]triazine-6-carboxylate ethyl 4-chloro-5,8-dimethyl-3-quinolinecarboxylate Ethyl 4-chloro-5,7-dimethylquinoline-3-carboxylate
 ethyl 4-chloro-5,7-difluoroquinoline-3-carboxylate ethyl 4-chloro-3-nitrobenzoate ethyl 4-chloro-2-phenylpyrimidine-5-carboxylate ethyl 4-chloro-2-phenyl-5-pyrimidinecarboxylate
 Ethyl 4-chloro-2-methylthiopyrimidine-5-carboxylate Ethyl 4-chloro-2-methylthio-5-pyrimidinecarboxylate ethyl 4-chloro-2-methylpyrimidine-5-carboxylate Ethyl 4-chloro-2-(trifluoromethyl)pyrimidine-5-carboxylate
 Ethyl 4-chloro-2-(pyridin-3-yl)pyrimidine-5-carboxylate Ethyl 4-chloro-2-(methylthio)pyrimidine-5-carboxylate Ethyl 4-chloro-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylate ethyl 4-butyl-3-iodobenzoate
 ethyl 4-butoxy-3-iodobenzoate ethyl 4-bromothiazole-2-carboxylate Ethyl 4-bromophenylacetate Ethyl 4-bromomethylcinnamate
 Ethyl 4-bromobutyrate Ethyl 4-bromobenzoate Ethyl 4-bromoacetoacetate Ethyl 4-bromo-5-methoxyindole-2-carboxylate
 ETHYL 4-BROMO-3-HYDROXYBENZOATE ethyl 4-bromo-3,5-dimethyl-1H-pyrrole-2-carboxylate Ethyl 4-bromo-1H-pyrrolo[2,3-b]pyridine-2-carboxylate Ethyl 4-bromo-1H-pyrrole-2-carboxylate
 Ethyl 4-Aminothiazole-5-carboxylate Ethyl 4-aminocinnamate ethyl 4-aminobenzoate ethyl 4-amino-7-hydroxy-1H-indole-2-carboxylate
 ETHYL 4-AMINO-3-NITROBENZOATE ethyl 4-amino-3-iodobenzoate Ethyl 4-amino-3-fluorobenzoate ethyl 4-amino-3-bromobenzoate
 ethyl 4-amino-3,5-diiodobenzoate ethyl 4-amino-2-methylquinoline-6-carboxylate Ethyl 4-amino-2-mercaptopyrimidine-5-carboxylate Ethyl 4-amino-2-(methylthio)pyrimidine-5-carboxylate
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