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Physicochemical properties of 2'-benzoyloxycinnamaldehyde
Soo-Yeon Kim1, Kyoung-Jin Lee, Young-Hee Shin
1College of Pharmacy, Pusan National University, Janfjeon Dong, Keumjeong Gu, Pusan 609-735, South Korea.
International Journal of Pharmaceutics
|November 16, 2004
Summary
2'-Benzoyloxycinnamaldehyde (BCA) shows antitumor potential but degrades rapidly. Optimal storage for this drug candidate involves acidic conditions, low temperature, and low ionic strength to maintain stability.
Area of Science:
- Pharmacology and Drug Development
- Chemical Kinetics
- Medicinal Chemistry
Background:
- 2 -Benzoyloxycinnamaldehyde (BCA), a 2-hydroxycinnamaldehyde derivative, exhibits significant antitumor activity against human solid tumors.
- Understanding BCA's physicochemical properties and degradation is crucial for its pharmaceutical development.
- Previous research highlighted BCA's potent cytotoxic effects, necessitating further investigation into its stability.
Purpose of the Study:
- To characterize the physicochemical properties of BCA.
- To elucidate the degradation kinetics and pathways of BCA.
- To determine optimal storage conditions for BCA to support drug development.
Main Methods:
- Aqueous solubility and hygroscopicity tests were performed.
- Degradation kinetics were studied across various pH conditions.
- The influence of temperature and ionic strength on degradation was evaluated.
Main Results:
- BCA exhibited low aqueous solubility and was not hygroscopic.
- Degradation followed first-order kinetics, influenced by general acid/base catalysis and spontaneous hydrolysis.
- BCA is highly unstable at pH > 9, more stable at pH 2-4, and degrades faster at higher temperatures and ionic strengths.
Conclusions:
- BCA's stability is highly pH-dependent, favoring acidic environments.
- Elevated temperature and ionic strength accelerate BCA degradation.
- Recommended storage conditions include slightly acidic pH, reduced temperature, and low ionic strength.