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thieno[3,2-c]pyridine THIENO[3,2-B]PYRIDINE THIENO[2,3-B]PYRIDINE-2-CARBOXYLIC ACID Thieno[2,3-b]pyridine-5-carboxylic acid THIENO[2,3-B]PYRIDINE-2-CARBALDEHYDE Methyl thieno[2,3-b]pyridine-2-carboxylate THIENO[3,2-B]THIOPHENE-2-CARBOXYLIC ACID 3-AMINO-4,6-DIMETHYL-THIENO[2,3-B]PYRIDINE-2-CARBONITRILE 1-(3-AMINO-4,6-DIMETHYLTHIENO[2,3-B]PYRIDIN-2-YL)ETHANONE