Summary
A thin-layer chromatographic method for the separation and identification of hitherto unknown disubstituted triphenodioxazines in submicrogram amounts has been developed using silica gel plates. The solvent systems used are acetone-petroleum ether (60∶40), benzene-petroleum ether (80∶20) and acetone-petroleum ether (50∶50). The compounds are detected by spraying the plates with 0.05 mol dm−3 sulphuric acid.
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Ojha, K.G., Jain, S.K. & Gupta, R.R. Thin-layer chromatographic analysis of some new 1,8-disubstituted triphenodioxazines. Chromatographia 12, 306–307 (1979). https://doi.org/10.1007/BF02261836
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DOI: https://doi.org/10.1007/BF02261836