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Identification of Pharmaceuticals in The Aquatic Environment Using HPLC-ESI-Q-TOF-MS and Elimination of Erythromycin Through Photo-Induced Degradation

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Olanzapine degradation kinetics in aqueous solution.

¹Department of Pharmaceutical and Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka, Enugu State, Nigeria. cjmbah123@yahoo.com

|May 11, 2011

Summary

Olanzapine degradation follows first-order kinetics, influenced by pH and temperature. Hydrolysis is catalyzed by hydrogen and hydroxide ions, with degradation rates increasing with temperature.

Area of Science:

Pharmaceutical Chemistry
Physical Chemistry

Background:

Olanzapine is an atypical antipsychotic medication.
Understanding drug degradation is crucial for stability and efficacy.

Purpose of the Study:

To investigate the degradation kinetics of olanzapine.
To determine the influence of pH and temperature on olanzapine stability.

Main Methods:

Spectrophotometric analysis was employed.
Degradation rates were measured at various pH and temperature conditions.

Main Results:

Olanzapine degradation followed first-order kinetics.
The hydrolytic degradation was catalyzed by hydrogen and hydroxide ions.
Arrhenius plots confirmed temperature dependence of degradation.

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Conclusions:

Olanzapine stability is significantly affected by pH and temperature.
The degradation pathway involves acid and base catalysis.
Kinetic data provides insights for formulation development.