Gas-liquid chromatographic analysis of trimethylsilyl derivatives of pyrimidine and purine bases and nucleosides.

A systematic study of basic nucleic acid components and their biologically significant derivatives has been carried out. The optimum silylation conditions have been found and the chromatographic behaviour of the trimethylsilyl derivatives formed has been studied. Relations between the gas chromatographic behaviour and the structure of the substances analyzed were investigated on the basis of the retention indices measured on two stationary phases of different polarity. The relative molar responses were determined for the quantitative determination of the substances. The results make possible the determination of biologically active substances in pharmaceuticals.