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Green Chemistry for Extractables & Leachables Testing | Resolian

Green Chemistry for Extractables & Leachables Testing

Discover how Resolian’s green chemistry LC-HRMS method for extractables & leachables testing cut runtime by 37% and solvent use – without compromising sensitivity or quality.

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Our work, presented at APA 2025, focuses on developing an in vitro CES reaction phenotyping using p-nitrophenyl acetate (p-NPA) as a universal substrate. In this study, we compared different CES substrates, optimized the experimental conditions and developed an LC-MS method for simultaneous detection of p-NPA and its metabolites.
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Analytical Sciences Poster Videos Thumbnail - DoE Optimisation

LC-MS Sensitivity Optimization Using DoE

Discover how Resolian increased LC-MS sensitivity by 438% using Design of Experiments – achieving required detection limits without new equipment investment.

Preventing False Positives in Nitrosamine Testing

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Green Chemistry for Extractables & Leachables Testing

When “It Works” Isn’t Enough

Your extractables and leachables screening method has been running reliably for years. It meets acceptance criteria. Delivers quality data. Gets the job done.

But legacy methods often remain frozen in time – validated once, then left unchanged even as better alternatives emerge. As pharmaceutical and healthcare industries increasingly prioritize sustainability alongside quality, a new question arises: can we make our methods work better while reducing their environmental footprint?

For many analytical laboratories, the answer is yes. But it requires asking the question.

Watch: Transforming E&L Screening Through Green Chemistry

In this video, Resolian senior scientist Joel Haines shares how the analytical sciences team redeveloped a routine high-resolution LC-MS screening method by implementing green chemistry principles – achieving better efficiency and sustainability without compromising analytical performance.

Extractables and leachables profiling is critical for pharmaceutical and healthcare applications, ensuring that substances migrating from packaging, delivery devices, or manufacturing equipment don’t compromise product safety or efficacy. These analyses require sensitive, reliable methods that detect and profile potential impurities across diverse matrices.

Joel’s work demonstrates that even well-established methods can evolve to become both more sustainable and more efficient.

What You’ll Learn in This Video:

  • The opportunity presented when redeveloping a legacy LC-HRMS screening method
  • Why ethanol was selected over acetonitrile as organic mobile phase
  • Sustainability advantages of ethanol: lower production impact, reduced emissions and pollution
  • Method optimization that reduced runtime from 30 to 19 minutes (37% reduction)
  • Impact on solvent use, running costs, and laboratory throughput
  • Validation results: meeting all acceptance criteria with no sensitivity loss
  • Client perspectives on high-quality data with reduced environmental impact

The transformation wasn’t just about swapping solvents – it was about reimagining what the method could achieve while reducing its environmental burden.

Download Poster

Download a copy of the poster discussed here.

The Green Chemistry Advantage

Switching from acetonitrile to ethanol as the organic mobile phase delivers measurable sustainability benefits:

  • Lower production impact – Ethanol manufacturing generates significantly less pollution and fewer emissions compared to acetonitrile synthesis
  • Renewable sourcing potential – Ethanol can be produced from renewable feedstocks
  • Reduced hazardous waste – Lower environmental impact throughout the solvent lifecycle
  • Cost considerations – Potential economic benefits alongside environmental gains

Combined with the 37% reduction in method runtime, these changes compound across hundreds or thousands of injections—translating to meaningful reductions in both environmental impact and operational costs.

Performance Without Compromise

The critical question for any method redevelopment: does it still work?

Joel’s redeveloped method met all previous acceptance criteria with no loss in sensitivity. This demonstrates that green chemistry implementations aren’t about sacrificing performance for sustainability—they’re about achieving both through smarter method design.

For pharmaceutical and healthcare clients, this means:

  • Confidence in data quality and regulatory compliance
  • Reduced environmental footprint for their analytical programs
  • Potential cost savings through improved efficiency
  • Alignment with corporate sustainability commitments

Rethinking Legacy Methods

Many analytical methods remain unchanged simply because they’re working. But “working” and “optimal” aren’t the same thing.

Whether you’re maintaining legacy methods or developing new ones, it’s worth considering:

  • Can we reduce solvent consumption without compromising separation?
  • Are there greener alternatives to current mobile phases?
  • Can method optimization improve both efficiency and sustainability?
  • Do current methods reflect best practices in green analytical chemistry?

These questions don’t just address environmental responsibility—they often reveal opportunities for improved efficiency, reduced costs, and increased throughput.

Expert E&L Analysis with Environmental Responsibility

Resolian’s analytical sciences team specializes in extractables and leachables profiling for pharmaceutical and healthcare applications, combining deep technical expertise with commitment to sustainable analytical practices.

Our approach integrates:

  • Advanced LC-HRMS screening for comprehensive impurity profiling
  • Green chemistry principles applied to method development
  • Validation expertise ensuring regulatory compliance
  • Global laboratory network supporting diverse project needs

Whether you’re seeking routine E&L testing or developing specialized methods for unique applications, we bring both the analytical capabilities and the environmental consciousness that modern pharmaceutical development requires.

Ready to discuss your extractables and leachables testing needs?

Contact our analytical sciences team to explore how we can deliver high-quality data with reduced environmental impact.

Zhiyang Zhao, Ph.D.

Chief Scientific Officer

Zhiyang Zhao, Ph.D., serves as Chief Scientific Officer (CSO) at Resolian. Dr. Zhao has over 30 years of pharmaceutical industry experience with special focus on drug metabolism and bioanalysis of small and large molecules in drug discovery and development. Dr. Zhao has previously held positions at Pfizer, GlaxoSmithKline, and Amgen. Before joining Resolian in 2015, Dr. Zhao served as Site Director of Preclinical Research at Amgen in Cambridge, Massachusetts, for over a decade. 

Currently, Dr. Zhao serves as an Adjunct Professor at the Eshelman School of Pharmacy of the University of North Carolina at Chapel Hill, North Carolina, and as Editor-in-Chief of Drug Metabolism & Bioanalysis Letters, a journal by Bentham Science, which publishes in all areas of drug metabolism and bioanalysis. Dr. Zhao received his Ph.D. degree in Medicinal Chemistry from Virginia Polytechnic and State University (popularly known as Virginia Tech) in Blacksburg, Virginia. 

 

Patrick Bennett

Chief Executive Officer

Patrick Bennett has over 35 years of experience in pharmaceutical analysis and laboratory management. Now Chief Business Officer at Resolian, Patrick’s experience includes the roles of Strategic Marketing Director for Pharma with Thermo Fisher Scientific, LabCorp, and Vice President of Strategy and Development with PPD. 

Patrick earned a B.S. degree in Toxicology and a M.S. degree in Pharmacology from the College of Pharmacy and Allied Health at St. John’s University and an M.B.A in International Marketing from the Martin J. Whitman School of Management at Syracuse University.