Development of a validated capillary electrophoresis method for enantiomeric purity control and quality control of levocetirizine in a pharmaceutical formulation.
Summary of "Development of a validated capillary electrophoresis method for enantiomeric purity control and quality control of levocetirizine in a pharmaceutical formulation."
A chiral capillary electrophoresis method has been developed for the quantification of 0.1% of the enantiomeric impurity (dextrocetirizine) in levocetirizine and determination of both in pharmaceuticals using sulfated-β-cyclodextrins (CDs) as chiral selector. Several parameters affecting the separation were studied such as the type and concentration of chiral selectors, buffer composition and pH, organic modifier, mixtures of two CDs in a dual system, voltage, and temperature. The optimal separation conditions were obtained using a 50 mM tetraborate buffer (pH 8.2) containing 1% (w/v) sulfated-β-CDs on a fused-silica capillary. Under these conditions, the resolution of two enantiomers was higher than 3. To validate the method, the stability of the solutions, robustness (two level half fraction factorial design for 5 factors using 19 experiments [2(n-1) +3]), precision, linearity (dextrocetirizine 0.25-2.5 μg/ml, R(2) = 0.9994, y = 0.0375x + 0.0008; levocetirizine 15-100 μg/ml, R(2) = 0.9996, y = 0.0213x + 0.0339), limit of detection (0.075 μg/ml, 0.03% m/m), limit of quantification (0.25 μg/ml, 0.1% m/m), accuracy (dextrocetirizine 84-109%, levocetirizine 97.3-103.1%), filter effect, and different CD batches were examined. The validated method was further applied to bulk drug and tablets of levocetirizine. Chirality, 2012. © 2012 Wiley Periodicals, Inc.
Katholieke Universiteit Leuven, Faculteit Farmaceutische Wetenschappen, Laboratorium voor Farmaceutische Analyse, Leuven, Belgium.
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Medical and Biotech [MESH] Definitions
A separation technique which combines LIQUID CHROMATOGRAPHY and CAPILLARY ELECTROPHORESIS.
A highly-sensitive (in the picomolar range, which is 10,000-fold more sensitive than conventional electrophoresis) and efficient technique that allows separation of PROTEINS; NUCLEIC ACIDS; and CARBOHYDRATES. (Segen, Dictionary of Modern Medicine, 1992)
Electrophoresis, Gel, Two-dimensional
Electrophoresis in which a second perpendicular electrophoretic transport is performed on the separate components resulting from the first electrophoresis. This technique is usually performed on polyacrylamide gels.
Pharmacopoeias As Topic
Authoritative treatises on drugs and preparations, their description, formulation, analytic composition, physical constants, main chemical properties used in identification, standards for strength, purity, and dosage, chemical tests for determining identity and purity, etc. They are usually published under governmental jurisdiction (e.g., USP, the United States Pharmacopoeia; BP, British Pharmacopoeia; P. Helv., the Swiss Pharmacopoeia). They differ from FORMULARIES in that they are far more complete: formularies tend to be mere listings of formulas and prescriptions.
A highly miniaturized version of ELECTROPHORESIS performed in a microfluidic device.
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