作者:Tsun Ming Chen、Lester Chafetz
DOI:10.1002/jps.2600760907
日期:1987.9
The kinetics of procaterol (1) degradation in buffered acidic solutions (pH 4-6) was investigated using an HPLC procedure. The effect of temperature and ferric ions on the reaction rate was estimated. In acidic solutions, 1 undergoes pseudo first-order degradation with an induction period. The first-order rate constant for degradation increased and the induction period decreased with an increase in
使用HPLC方法研究了在缓冲酸性溶液(pH 4-6)中丙卡特罗(1)降解的动力学。估计了温度和铁离子对反应速率的影响。在酸性溶液中,1随诱导期经历伪一级降解。随着pH的升高,降解的一级速率常数增加,诱导期减少。铁离子催化降解反应并缩短了诱导期。在pH 6时,反应的活化能为34.5 kcal / mol / deg。这项研究的结果表明,在酸性pH下,在没有重金属离子的情况下,溶液中的1更稳定,并且可以避开空气。