2-Thiophenecarbonitrile, 5-formyl-, thiosemicarbazone 21512-15-2 5-Cyanothiophene-2-carboxaldehyde thiosemicarbazone 5-Cyanthiophene-2-aldehydethiosemicarbazone 5-Formyl-2-thiophenecarbonitrile thiosemicarbazone Citenazone HOE 105 Hydrazinecarbothioamide, 2-[(5-cyano-2-thienyl)methylene]- NSC301505