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Improving LC-MS Analysis of Basic Impurities Using CORTECS C18+, 2.7 µm Solid-Core Particle Columns

13 Aug 2014

This application note describes use of two structurally similar drugs, imipramine and amitriptyline to simulate a difficult mixture of an API and a closely eluting impurity present at low levels. These compounds present a common analytical challenge. Their basic nature leads to poor peak shape in frequently employed formic acid mobile phase conditions. Such phenomena are mitigated with the CORTECS C18+ columns due to the surface charge present. This technology and the solid-core particles afford superior peak shape and higher MS signal. The result is more accurate and reliable characterization of the impurity peaks using HPLC-MS and UPLC-MS instruments.

ACQUITY UPLC System

Waters

Waters ACQUITY UPLC - Dramatic Improvements in Speed, Sensitivity and Resolution Whether you work in methods development or quality assurance, in drug discovery and development or testing for safety in food supplies, you seek a productivity edge. With the ACQUITY UPLC® System, now you can get more information in a single, short run than you've ever seen with HPLC. Waters ACQUITY UPLC System UltraPerformance LC® (UPLC®) technology starts with unique 1.7 μm small-particle chemistries. Chromatographers no longer need to choose between speed and resolution–with UPLC you get both. Instrument Designed for Chemistry; Chemistry Designed for the Instrument The ACQUITY UPLC System has been holistically designed to match the performance needs of our innovative column chemistries with robust hardware, easy-to-use software and specialized support services. Small, pressure-tolerant particles High-pressure fluidic modules Minimized system volume Negligible carryover Reduced cycle times Fast response detectors Integrated system software and diagnostics With UPLC you have the ability to work more efficiently with higher speed, sensitivity and resolution at a much wider range of linear velocities, flow rates and backpressures to obtain superior results. The Waters ACQUITY UPLC System's high-pressure fluidics optimizes flow rates to make the most of small particle technology. The ACQUITY UPLC System's sample-handling design is designed to ensure exceptionally low carryover and reduced cycle time. And when interfaced with the Sample Organizer, it increases unattended sample capacity by ten times. High-speed detectors, both optical and mass, contribute to increased sensitivity and help manage the heightened speed and resolution requirements of UPLC. ACQUITY UPLC Systems are easily controlled, diagnosed, and monitored via a graphical system console interface. The console offers: Quick and easy access to critical instrument parameters Simple system start-up, elegant system status monitoring and predictive performance indicators to ensure maximum productivity Data management capabilities that are supported by both MassLynx™ and Empower™ software The ACQUITY UPLC System is also supported by Intelligent Device Management technology with our Connections® INSIGHT™ service, providing instrument diagnostics.

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CORTECS® Columns

Waters

Unleash the power of your laboratory's instrumentation. CORTECS® 1.6 µm and 2.7 µm solid-core columns deliver new levels of performance. CORTECS Columns are available in both reversed-phase and HILIC options, giving you the flexibility and power to develop methods for challenging separations even faster. With different particle characteristics and innovative charged surface modifications, CORTECS Columns are suitable for use in a wide variety of applications. CORTECS Columns offer particle sizes ideal for HPLC, UHPLC, and UPLC platforms, assuring a simple, seamless method transfer with consistent results across different particle sizes and column configurations. CORTECS 1.6 µm and 2.7 µm solid-core columns are suitable for use in a wide variety of applications. CORTECS Columns offer particle sizes ideal for HPLC, UHPLC, and UPLC platforms, assuring a simple, seamless method transfer with consistent results across different particle sizes and column configurations.

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Empower™ Chromatography Data System

Waters

The Empower Chromatography Data System is Waters’ compliance-ready chromatography data software (CDS) for advanced data acquisition, processing, and reporting that simplifies the management of chromatography test results.

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UHPLC and HPLCHigh performance liquid chromatography (HPLC) and ultra high performance liquid chromatography (UHPLC), also known as UPLC, are analytical techniques used to separate, identify and quantitate components of complex mixtures including biological samples such as proteins and lipids as well as chemical mixtures of pesticides, drugs and oils. Both techniques are liquid chromatographic methods but differ by operating pressures (HPLC < 6000 psi < UHPLC ). Components of HPLC and UHPLC systems include columns, detectors, pumps, autosamplers and column heaters. Explore a range of UHPLC and HPLC columns for your specific sample needs including reverse phase, normal phase, ion exchange, HILIC, ion exclusion and size exclusion columns. For more specialized HPLC, explore FPLC, countercurrent LC and simulated moving bed systems. Find the best UHPLC and HPLC equipment in our peer reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.LC-MSLC-MS (liquid chromatography-mass spectrometry) systems and equipment are used for separation and quantitative analysis of complex mixtures, combining liquid chromatography and mass spectrometry. Quantify proteins, contaminants, pesticides or screen for drug metabolites with a high level of sensitivity. LC-MS systems and equipment include reverse phase, normal phase and specialized columns integrated with various MS detectors such as time-of-flight (TOF), quadrupole, orbitrap or ion trap mass analyzers. LC-MS/MS instruments equipped with a qTOF or triple quadrupole analyzer give greater sensitivity and resolving power to your analysis. Find the best LC-MS equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Mass SpectrometryMass spectrometry (MS) is a powerful analytical technique used to identify and quantify molecules based on the mass-to-charge ratio of gas-phase ions. It provides detailed information about the structure, composition, and properties of compounds and is widely used across fields such as environmental monitoring, materials science, drug discovery and development, food and beverage testing, and wider chemical research. Key MS techniques include tandem mass spectrometry (MS/MS), liquid chromatography–mass spectrometry (LS-MS) and inductively coupled plasma (ICP-MS). Choosing from these wide range of techniques and technologies can be a daunting task, so keep up to date with scientific applications, performance expectations, and customer reviews here all in one place. Visit our product directory to receive quotes direct from the manufacturer. Scale-upScale-Up is generally defined as the process of transferring the results of the discovery phases of the drug discovery process, obtained on a laboratory scale, to the pilot plant and finally to production scale. Scale-Up uses reactors and pump systems as well as reagents, standards and buffers. Often Scale-Up is provided as a service by Contract Manufacturing Organizations (CMOs). Chromatography Method DevelopmentChromatography method development is the process of designing and optimizing chromatographic techniques to separate and analyze complex mixtures. This includes selecting appropriate stationary and mobile phases, determining flow rates, and optimizing detection methods. Successful method development is essential for high-quality results in fields like pharmaceuticals, food safety, and environmental analysis. Explore chromatography method development tools in our peer-reviewed product directory; compare products, check reviews, and get pricing directly from manufacturers.HPLC Method DevelopmentIt is important to develop and validate HPLC methods in order to identify, quantify or purify compounds of interest in the most efficient way. Effective method development ensures optimization, quality control and cost effectiveness.PharmaceuticalsPharmaceuticals are medicinal drugs used in healthcare to diagnose, prevent, cure and treat illnesses. Pharmaceuticals that are excreted after use appear in wastewater and can have detrimental effects on the environment.
Improving LC-MS Analysis of Basic Impurities Using CORTECS C18+, 2.7 µm Solid-Core Particle Columns