title: Interconversion of ampicillin and hetacillin in vitro.
mesh_terms: D000667:Ampicillin; D002250:Carbon Radioisotopes; D004355:Drug Stability; D006207:Half-Life; D006898:Hydroxylamines; D007202:Indicators and Reagents; D007553:Isotope Labeling; D010397:Penicillanic Acid / Q000096:biosynthesis; D010400:Penicillin G / Q000032:analysis; D010406:Penicillins; D012996:Solutions; D013055:Spectrophotometry, Infrared; D013997:Time Factors
chemical_list: D002250:Carbon Radioisotopes; D006898:Hydroxylamines; D007202:Indicators and Reagents; D010406:Penicillins; D012996:Solutions; D000667:Ampicillin; D010397:Penicillanic Acid; D010400:Penicillin G