Abstract
The proton NMR spectra of the antileukemic agent glyoxal bis(amidinohydrazone) and of nine alkyl- and dialkylglyoxal analogs thereof, many of which are novel compounds, are reported. Measurements were carried out using both the free bases (in D2O and dimethyl sulfoxide-d6) and their divalent salts (in D2O). Dioxan was a suitable internal standard, while DSS caused extensive precipitation. Most spectra were first-order or nearly so, and the resonances of the various protons could be rigorously