Their thin-layer chromatogram, fluorescent spectra and fast atom bombardment mass spectra were examined to verify the completeness of the reaction and also to assign the structures.

Objective to set up the thin-layer chromatogram differentiation method of the principal ingredients in compound Herba Leonuri particle, and to establish the foundation for the quality control stander.

The application of rod thin layer chromatogram technology was applied in oil drilling field, providing a new way to on-site evaluate crude properties promptly and quantitatively.