1752-30-3 2-(1-Methylethylidene)hydrazinecarbothioamide ACETONE THIOSEMICARBAZIDE AI3-22961 Acetone thiosemicarbazone Acetonethiosemicarbazone Acetonthiosemikarbazon [Czech] EINECS 217-137-9 HSDB 6422 Hydrazinecarbothioamide, 2-(1-methylethylidene)- NSC 711 Thiosemicarbazone acetone