title: Studies on stability of drugs in frozen systems. 3. The hydroxyl ion-catalyzed decomposition of benzylpenicillin sodium in frozen aqueous solution.
mesh_terms: D002384:Catalysis; D004355:Drug Stability; D005615:Freezing; D006207:Half-Life; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D007700:Kinetics; D008094:Lithium; D010400:Penicillin G; D012972:Sodium Hydroxide; D013053:Spectrophotometry; D013997:Time Factors
chemical_list: D012972:Sodium Hydroxide; D008094:Lithium; D010400:Penicillin G