2-Formylthiophene thiosemicarbazone 2-Thiophenealdehyde thiosemicarbazone 2-Thiophenecarbaldehyde thiosemicarbazone 2-Thiophenecarboxaldehyde, thiosemicarbazone 5351-91-7 AI3-52012 Hydrazinecarbothioamide, 2-(2-thienylmethylene)- (9CI) Semicarbazide, 4-(thenylidene)-2-thio-