2-Formylcinchoninic acid 3-thiosemicarbazone hydrate 4-Carboxyquinolyl-2-aldehyde thiosemicarbazone monohydrate 4-Quinolinecarboxylic acid, 2-(((aminothioxomethyl)hydrazono)methyl)-, monohydrate 62604-50-6 Cinchoninic acid, 2-formyl-, 3-thiosemicarbazone, monohydrate