title: 13C-enrichment as an aid in the analysis of mass-spectral fragmentation patterns.
mesh_terms: D002241:Carbohydrates / Q000032:analysis*; D002247:Carbon Isotopes; D002849:Chromatography, Gas / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*
chemical_list: D002241:Carbohydrates; D002247:Carbon Isotopes