Oligonucleotide Impurity Analysis Using Hydrophilic Interaction Chromatography (HILIC)

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This how-to guide aims to provide scientists with comprehensive information on oligonucleotide impurity analysis using HILIC, empowering you to advance your research in this field.

What you will learn about:

• Optimization strategies for mobile phase and gradient conditions to enhance oligonucleotide impurity analysis using HILIC
• The integration of HILIC with mass spectrometry (MS) for precise identification and characterization of impurities
• Techniques to address sensitivity challenges, including reducing adducts and adjusting flow rates
• Troubleshooting common issues such as poor resolution and irreproducible retention in oligonucleotide impurity analysis

More Information

Oligonucleotides, synthetic DNA/RNA strands used in research and therapeutics, are subject to synthesis errors and degradation that can lead to impurities like shortmers and side reactions. Traditional analytical techniques, such as ion-pairing reversed-phase chromatography (IP-RP) and anion exchange chromatography (AEX), have limitations in terms of sensitivity, selectivity, and mass spectrometry compatibility. In contrast, hydrophilic interaction chromatography (HILIC) has emerged as a powerful method, offering high-resolution separation and compatibility with mass spectrometry for effective impurity profiling.