title: Ring-D fragmentation of cardenolides.
abstract: The major fragmentation paths typical for the cardenolides system have been elucidated by labelling studies.
mesh_terms: D002298:Cardenolides / Q000032:analysis*; D003903:Deuterium; D004073:Digitoxigenin / Q000032:analysis; D004076:Digoxigenin / Q000032:analysis; D013058:Mass Spectrometry; D010103:Oxygen Isotopes
chemical_list: D002298:Cardenolides; D010103:Oxygen Isotopes; D004073:Digitoxigenin; D003903:Deuterium; D004076:Digoxigenin