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3-Thiopheneboronic acid 3-THIOPHENECARBOXYLIC ACID HYDRAZIDE 5,5-Dimethyl-2-(thiophen-2-yl)-1,3,2-dioxaborinane THIENO[3,2-B]PYRIDINE Ethylthiophene-2-carboximidoatehydrochloride ETHYL THIOPHENE-2-GLYOXYLATE 2-Thiophenesulfonic acid 2,3-THIOPHENEDICARBOXALDEHYDE 3-THIOPHENECARBOXIMIDAMIDE HYDROCHLORIDE 2-Thiopheneboronic acid