Synonyms: 1-Isopropyl-3-hydroxy-5-semicarbazone-6-oxo-2,3,5,6-tetrahydroindole;5,6-Indolinedione, 3-hydroxy-1-isopropyl-, 5-semicarbazone;Divascan;Iprazochrome;Isopropylnoradenochrome monosemicarbazone;Isopropylnoradrenochrome monosemicarbazone;2-(1,2,3,6-Tetrahydro-3-hydroxy-1-(1-methylethyl)-6-oxo-5H-indol-5-