Abstract
A stability-indicating high-performance liquid chromatography method to quantify 2-(2,4-difluorophenyl)-4,5,6,7-tetrafluoroisoindoline-1,3-dione (NSC-726796) and its three main degradation products was developed. This method was used to investigate its degradation kinetics and mechanism. The reaction follows first-order kinetics and appears to be base catalyzed with the maximum stability at pH 1. The products were identified as 2-(2,4- difluorophenylcarbamoyl)-3,4,5,6-tetrafluorobenzoic acid (NSC-749820), 2,4-difluoroaniline, and tetrafluorophthalic acid. The parent drug, NSC-726796, was also found to react with methanol and ethanol. NSC-726796 demonstrates antiangiogenic activity, however, when its degradant NSC749820 does not show antiangiogenic activity.
Original language | English (US) |
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Pages (from-to) | 661-673 |
Number of pages | 13 |
Journal | AAPS PharmSciTech |
Volume | 13 |
Issue number | 2 |
DOIs | |
State | Published - Jun 2012 |
Keywords
- CPS49
- NSC-726796
- NSC-749820
- preformulation
- stability
ASJC Scopus subject areas
- Pharmaceutical Science