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3-Methoxy-2-Nitro Benzonitrile thiophene-2,4-dicarbaldehyde Ethylthiophene-2-carboximidoatehydrochloride ETHYL THIOPHENE-2-GLYOXYLATE 2-Thiophenesulfonic acid 3-THIOPHENECARBOXIMIDAMIDE HYDROCHLORIDE THIOPHENE-2-THIOCARBOXAMIDE 2-Thiopheneboronic acid 3,4-Diaminothiophene dihydrobromide THIOPHEN-3-AMINE HYDROCHLORIDE