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Preparation, crystal structure and antibacterial activity of condensation products of usnic acid and acyl hydrazides
(Journal of the Serbian Chemical Society, 1998)
Three condensation products of usnic acid with the hydrazides of α-naphthoic, caprylic, and oxamic acids, respectively, have been prepared and characterized by spectrometric methods. A reassignment of the 13C-NMR spectral ...
Classification of the asphalts and their source rock from the Dead Sea Basin (Israel): the asphaltene/kerogen vanadyl porphyrins
(Journal of the Serbian Chemical Society, 1998)
The asphaltenes of the asphalts from the Dead Sea Basin were examined for the presence of vanadyl porphyrins. These examinations demonstrated that the asphalts fall into two broad class types, one having a relatively high ...