Title: Investigation of degradation products in a topical gel containing erythromycin and benzoyl peroxide by liquid chromatography-mass spectrometry
Authors: Haghedooren, Erik ×
Raju V S, Kiran Kumar Raju Bhupathi
Dehouck, Pieter
Govaerts, Cindy
Van Schepdael, Ann
Hoogmartens, Jos
Adams, Erwin #
Issue Date: Apr-2006
Publisher: Pergamon Press
Series Title: Journal of Pharmaceutical and Biomedical Analysis vol:41 issue:1 pages:165-175
Abstract: Benzamycin, combining benzoyl peroxide and erythromycin, is a topical gel used in the treatment of acne vulgaris. Because of the reactivity of benzoyl peroxide, preparations containing both erythromycin and benzoyl peroxide might be unstable and degradation products could be formed. To investigate and identify these latter products, a gradient-based liquid chromatographic method using volatile mobile phase constituents was developed. Mass spectrometry data were acquired on solutions containing erythromycin and benzoyl peroxide and on freshly prepared, 2-month-old and 18-month-old samples of Benzamycin. With the reference spectra as interpretative templates, it was concluded that erythromycin undergoes oxidation, followed by benzoylation.
ISSN: 0731-7085
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Pharmaceutical Analysis
× corresponding author
# (joint) last author

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