Journal
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
Volume 58, Issue -, Pages 27-33Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpba.2011.09.019
Keywords
Dimethyl sulfate; Chloroacetyl chloride; Genotoxic; Capillary electrophoresis and validation
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Funding
- Aptuit Laurus Pvt. Ltd.
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A simple and rapid capillary zone electrophoretic method was developed for determining dimethyl sulfate a possible human carcinogen and mutagen and chloroacetyl chloride a potential genotoxic agent at trace levels in pharmaceutical drug substances by indirect photometric detection. A systematic screening of various anionic probes was performed to obtain the best separation conditions and sensitivity. High sensitivities with low quantification and detection levels were achieved for dimethylsulfate and chloroacetyl chloride using a background electrolyte (BCE) containing 5 mM pyridine dicarboxylic acid as the probe ion. The method is specific, precise and accurate for the two genotoxins. The optimized method was validated for specificity, precision, linearity, accuracy and stability in solution. Calibration curves were linear (R > 0.999) for both dimethylsulfate and chloroacetyl chloride in the range LOQ - 300% of nominal concentrations. The CE method was effectively implemented for estimating dimethylsulfate and chloroacetyl chloride in two different active pharmaceutical ingredients (APIs). (C) 2011 Elsevier B.V. All rights reserved.
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