2,5-Diaziridinyl-3,6-bis(carboethoxyamino)-1,4-benzoquinone Ii: Isolation and Characterization of Degradation Products
作者:G.K. Poochikianx、J.A. Kelley
DOI:10.1002/jps.2600700212
日期:1981.2
chromatographic (HPLC) method was applied to monitor 2,5-diaziridinyl-3,6-bis(carboethoxyamino)-1,4-benzoquinone (I) and its degradation products in pharmaceutical vehicles at 25 +/- 0.1 degrees. At the optimal pH for stability of I, an increase in buffer concentration [phosphate and tris(hydroxymethyl)-aminomethane] or ionic strength accelerated degradation. The reaction rate in the solutions studied followed
采用直接高效液相色谱(HPLC)方法以25 +/-的浓度监测药物载体中的2,5-二氮并吡啶基-3,6-双(羰乙氧基氨基)-1,4-苯醌(I)及其降解产物0.1度。在用于I稳定性的最佳pH值下,缓冲液浓度[磷酸盐和三(羟甲基)-氨基甲烷]或离子强度的增加会加速降解。研究溶液中的反应速率遵循拟一级动力学。通过半制备HPLC分离后,通过质谱法对降解产物进行表征。在酸性和碱性介质中存在不同的降解途径。酸催化的反应导致连续的氮丙啶环打开,而碱催化的反应导致该氮丙啶环的亲核取代。