Determination of five potential genotoxic impurities in dalfampridine using liquid chromatography

Mohit Jain, Vishal Srivastava, Rajesh Kumar, Vishal Dangi, S. G. Hiriyanna, Ajay Kumar, Pramod Kumar

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


A sensitive and selective HPLC method was developed for identification and quantification of five Potential genotoxic impurities (PGIs) viz. Impurity-I, Impurity-II, Impurity-III, Impurity-IV and Impurity-V in Dalfampridine (Drug substance). The method utilizes Zorbax silica column (250 mm × 4.6 mm, 5.0 μm) with UV detector in HILIC (Hydrophilic Interaction Liquid Chromatography) mode for quantitation of five PGIs. It has been validated as per International Council for Harmonisation (ICH) guidelines and is able to quantitate all PGIs at 75 ppm with respect to 20 mg/mL of sample concentration. It is linear in the range of 22.5–112.5 ppm for all PGIs, which matches the range of LOQ-150% of estimated permitted level (75 ppm). Its accuracy was established in the range from 88.14 to 107.65% for these PGIs. The correlation coefficient of each impurity was >0.999. It is a good quality control tool for quantitation of PGIs in Dalfampridine at low level.

Original languageEnglish
Pages (from-to)27-31
Number of pages5
JournalJournal of Pharmaceutical and Biomedical Analysis
StatePublished - 30 Jan 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016 Elsevier B.V.


  • Dalfampridine
  • Genotoxic impurity
  • HILIC mode
  • UV detector
  • Validation


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