title: Identification of keto acids in arctic bramble, Rubus arcticus L. as methyl esters of their 2,4-dinitrophenylhydrazones.
mesh_terms: D002855:Chromatography, Thin Layer / Q000379:methods; D004136:Dinitrobenzenes; D006835:Hydrazones; D007651:Keto Acids / Q000032:analysis*; D013058:Mass Spectrometry / Q000379:methods; D008745:Methylation; D010944:Plants / Q000032:analysis*
chemical_list: C001072:2,4-dinitrophenylhydrazone; D004136:Dinitrobenzenes; D006835:Hydrazones; D007651:Keto Acids