title: Separation of degradation products of double-labeled benzylpenicillin on a cation-exchange column.
abstract: By using a cation-exchange resin and eluting with a lithium citrate buffer gradient, good separations were obtained for several degradation products of double-labeled benzylpenicillin.
mesh_terms: D001673:Biodegradation, Environmental; D002021:Buffers; D002411:Cation Exchange Resins; D002852:Chromatography, Ion Exchange; D007553:Isotope Labeling; D010400:Penicillin G / Q000032:analysis*
chemical_list: D002021:Buffers; D002411:Cation Exchange Resins; D010400:Penicillin G