A colorimetric method for the estimation of usnic acid.
D000447:Aldehydes; D000588:Amines; D001572:Benzofurans / Q000032:analysis*; D002855:Chromatography, Thin Layer; D003124:Colorimetry; D008011:Lichens / Q000032:analysis; D008722:Methods; D013057:Spectrum Analysis
D000447:Aldehydes; D000588:Amines; D001572:Benzofurans