title: Physico-chemical properties and hydrolysis of oxprenolol octanoyl and benzoyl esters.
abstract: The kinetics of hydrolysis of octanoyl ester of oxprenolol (O-OXP) and benzoyl ester of oxprenolol (Benz-OXP) has been investigated in aqueous solution at 310 K over the pH range 0.42-9.5. The decomposition was followed by UV spectral method. At the pH range 0.42 to 9.5, hydrolysis of oxprenolol esters (E-OXP) consists of hydrolysis of BH+ molecules catalyzed by hydrogen ions, spontaneous hydrolysis of BH+ molecules and hydrolysis of BH+ and B molecules catalyzed by hydroxide ions. Various buffer substances were found to exhibit general acid and base catalysis of the degradation.
authors.affiliation: Department of Pharmaceutical Chemistry, K. Marcinkowski University of Medical Sciences, Poznań, Poland.
authors.forename: M
authors.initials: M
authors.lastname: Nogowska
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000737:chemistry*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003124:Colorimetry; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D010096:Oxprenolol / Q000031:analogs & derivatives* / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000319:Adrenergic beta-Antagonists; D010096:Oxprenolol