Abstract
Nodosin, a new anthraquinone from the flowers of Cassia nodosa, has been determined in microamounts by oxidation with potassium hexacyanoferrate (III)
in alkaline medium. The oxidation required 10 moles of oxidant per mole of the quinone
with the production of formic, acetic and maleic acids, 2,6–dihydroxy–toluene and
carbon dioxide. The oxidation products were identified and the conditions of stoichiometry
have been studied. The mean error was found to be 2.3 %.
