3115-21-7 4-21-00-03555 (Beilstein Handbook Reference) 4-Acetylpyridine thiosemicarbazone BRN 0154318 Hydrazinecarbothioamide, 2-(1-(4-pyridinyl)ethylidene)- (9CI) KETONE, METHYL(4-PYRIDYL), THIOSEMICARBAZONE Ketone, methyl 4-pyridyl, thiosemicarbazone (8CI) Ketone, methyl4-pyridyl, thiosemicarbazone Methyl 4-pyridyl ketone thiosemicarbazone NSC 49264