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Identification of Barbiturates by X-ray Diffraction Powder Patterns of Their p-Nitrobenzyl Derivatives

Volume 15, Number 3 (May 1961) Page 60-64

Cloutier, J.A.R.; Manson, Jane M.


The identification of barbituric acids by the x-ray powder diffraction method is discussed from the practical point of view. Data are presented showing the advantage of preparing the p-nitrobenzyl derivative whenever identification of the isolated free acid is either doubtful or considered impossible. A detailed account of the experimental micro technique is given and the applicability of the technique to pharmaceutical products as forensic specimens is discussed.