Abstract
The RF values on filter-paper chromatograms of a no. of coumarins and related cinnamic acids in various solvents were detd. The compounds are best detected on the chromatogram by their fluorescence in u.-v. The results obtained with different solvent systems and the color reactions with various spray reagents are discussed in relation to the compounds, and suggest that definite indications of structure can be deduced. It is suggested that the coumarins present in natural extracts could be readily separated and identified by this method.