title: Separation of penicillins of closely related structure by partition chromatography on paper and cellulose thin-layer plates.
mesh_terms: D000667:Ampicillin / Q000302:isolation & purification; D002021:Buffers; D002854:Chromatography, Paper; D002855:Chromatography, Thin Layer; D006863:Hydrogen-Ion Concentration; D008722:Methods; D010401:Penicillin G Benzathine / Q000302:isolation & purification; D010406:Penicillins / Q000302:isolation & purification*; D011048:Polarography; D013329:Structure-Activity Relationship
chemical_list: D002021:Buffers; D010406:Penicillins; D000667:Ampicillin; D010401:Penicillin G Benzathine