10418-09-4 4-03-00-01513 (Beilstein Handbook Reference) BRN 1771276 NSC 73234 Propanoic acid, 2-((aminothioxomethyl)hydrazono)- Pyruvic acid thiosemicarbazone Pyruvic acid, 2-(thiosemicarbazone) Thiosemicarbazone of pyruvic acid