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Large & Small Molecule

You’ve Got Molecules, We’ve Got Solutions

We offer a true, single-platform, end-to-end solution that can be catered to your specific drug discovery and development needs – saving you money while providing industry-leading turnaround times.

With solutions for both small- and large-molecule development, our experts will collaborate with you every step of the way, providing high-quality data, insights, and helping you work through the unique challenges of drug discovery and development to efficiently advance your project to the next milestone.

To learn more, download our new small- and large-molecule brochures.


Small Molecule Brochure

Large Molecule Brochure

For more information, contact us today.


As a global company with operations across Asia, Europe, and North America, WuXi AppTec provides a broad portfolio of R&D and manufacturing services that enable the global pharmaceutical and life sciences industry to advance discoveries and deliver groundbreaking treatments to patients. Through its unique business models, WuXi AppTec’s integrated, end-to-end services include chemistry drug CRDMO (Contract Research, Development and Manufacturing Organization), biology discovery, preclinical testing and clinical research services, helping customers improve the productivity of advancing healthcare products through cost-effective and efficient solutions. WuXi AppTec received an AA ESG rating from MSCI for the fourth consecutive year in 2024 and its open-access platform is enabling around 6,000 customers from over 30 countries to improve the health of those in need – and to realize the vision that “every drug can be made and every disease can be treated.”

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DAR Research on ADCs Using LC-MS

DAR Research on ADCs Using LC-MS

Antibody drug conjugates (ADCs) refer to conjugated drugs formed by linking monoclonal antibodies with small molecule drugs that exhibit strong cytotoxicity through specific linkers. Depending on the structure of the linker, ADCs can be divided into two types: fractured and non-fractured. This composition means that ADCs possess the targeting ability of monoclonal antibodies and the characteristics of small molecule cytotoxic drugs, or as they are colloquially known, “precision-guided biological missiles.”  This also makes the structure of ADCs complex and diverse, making the pharmacokinetics of ADCs extremely challenging and uncertain. Therefore, ADCs have garnered considerable attention as a new and efficient antibody-based drug. In recent years, with the successful approval of multiple ADC drugs worldwide, particularly since 2019, when a total of 10 ADC drugs were approved, a new wave of ADC research has begun.

Transforming Drug Development: How Smart Compound Management Safeguards Integrity and Boosts Efficiency

Transforming Drug Development: How Smart Compound Management Safeguards Integrity and Boosts Efficiency

In the current era of high-throughput screening and expansive compound libraries, traditional methods of compound management are becoming increasingly obsolete. Reliant on human handling and manual documentation, traditional systems often faltered under the pressure of scale, risking sample degradation, process inefficiencies, and delayed timelines. Early automation efforts helped address some of the procedural challenges by streamlining tasks such as weighing, plating, picking, and liquid handling, but bottlenecks remained. Persistent pressure points like sample integrity and process flexibility required more advanced intelligent solutions.