title: Use of phosphorescence in the detection of sub-nanomolar quantities of 4-methylumbelliferone and its derivatives on chromatograms.
mesh_terms: D002854:Chromatography, Paper / Q000379:methods; D002855:Chromatography, Thin Layer / Q000379:methods; D006923:Hymecromone / Q000032:analysis*; D008163:Luminescent Measurements; D008832:Microchemistry; D013050:Spectrometry, Fluorescence / Q000295:instrumentation / Q000379:methods; D014468:Umbelliferones / Q000032:analysis*
chemical_list: D014468:Umbelliferones; D006923:Hymecromone