2-(Pyrazinylmethylene)hydrazinecarbothioamide 2-Formylpyrazine thiosemicarbazone 4-24-00-00243 (Beilstein Handbook Reference) 7000-48-8 AI3-51869 BRN 0141552 ENT 51869 Hydrazinecarbothioamide, 2-(pyrazinylmethylene)- (9CI) NSC 144053 Pyrazinecarboxaldehyde, thiosemicarbazone