Screening Libraries

Successful drug discovery begins with aligning the right biology, the right screening approach and the right compounds. Our drug discovery screening libraries are designed to help you identify meaningful hits faster and with greater confidence. Combining clinically informed discovery strategies, human-centric biology and advanced screening technologies, we help teams move beyond activity signals to identify candidates with stronger translational potential.

Small Molecule Compound Libraries

Incorporating over a million high-quality and actively curated compounds, we have a broad collection of compound screening libraries designed to support diverse research objectives across a range of target classes, therapeutic areas and high-throughput screening strategies. Our compound libraries can be screened in-house through cascades designed for your program, facilitating speed to data and smoothing onwards progression of your program beyond hit identification, or delivered to you as assay-ready plates for screening in your own lab.

Grouped into various collections, we offer access to an extensive range of compounds for screening, actively and expertly curated and quality controlled. Depending on your requirements, our compound libraries can be screened in their entirety, or our experienced team of computational chemists can assist in designing a tailored set matching your objectives. Additionally, we can screen your own library in our high-throughput screening assays.

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Our Compound Libraries Range

Diversity Compound Library: ~500,000 compounds curated for diversity across chemical space
Aspire Diversity Library: ~500,000 compounds forming a complementary expansion to the diversity library
Lead-Like Compound Library: ~130,000 rule-of-five compliant compounds curated to maximize lead-like properties

Smart Screen Library: ~18,000 compounds semi-exclusive non-vendor compounds
Target Select Library Sets: sets of small molecules targeting kinases, protein-protein interactions, ion channels, as well as RNA-binding small molecules
Repurposing/Annotated Libraries: a chemically diverse set of compounds with FDA (and/or other agency) approval
Fragment Compound Libraries: a diverse collection optimized for fragment screening and chemistry follow-up

Custom Screening Library Design

Refine your high-throughput screening campaign with a subset of our full screening library of over 1 million compounds. Our CADD experts work with you to design a targeted screening selection. Researchers can also take advantage of computational selection for plate-based screening to create sets with desirable characteristics, such as maximizing structural representation or bias towards known activities or property profiles. Our scientists also integrate disease understanding, known clinical risks, biological relevance and translational considerations into library design and screening strategies. This approach supports identification of candidates with stronger potential to progress through development and ultimately benefit patients.

Approaches for creating a curated selection include:

Structure-based virtual screening from crystal structures or homology models
Ligand-based virtual screening based on known active compounds
Target-based screening based on known compounds active against a protein or target class
Similarity / substructure searching around known active compounds
Statistical / categorical model generation based around known active compounds
Physicochemical property-driven selections

Why Screening Libraries Matter in Drug Discovery

The quality of a screening campaign is determined long before the first assay readout. Selecting the appropriate library influences hit rates, chemical diversity, biological relevance and downstream optimization opportunities. Our screening library strategies are built around a simple principle: identify hits that have the greatest probability of becoming clinically relevant therapeutic candidates.

Through the integration of our expert drug-hunting teams, with data-driven selection approaches, we help clients:

Improve hit quality
Increase screening efficiency
Reduce false-positive findings
Prioritize biologically relevant molecules
Accelerate progression to hit-to-lead activities

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Antibody Discovery Libraries

Specifica antibody library services deliver antibodies with the desired biological activity and binding affinity without compromising developability, faster than traditional methods. Excusive antibody libraries, affinity maturation and developability optimization, and comprehensive data packages ensure delivery of high-quality antibodies for onwards development.

Explore Antibody Libraries

Why Partner With Us

Expert Library Curation

Screening libraries designed and maintained by experienced discovery scientists.

Integrated Drug Discovery Expertise

Experienced scientists with deep knowledge of target biology, screening strategy and lead discovery, and support extending from target validation through candidate nomination.

Technology-Enabled Decision Making

AI-assisted analytics, automation and modern screening platforms support faster, more informed decisions.

Flexible Partnership Models

Support ranging from individual studies through fully integrated discovery programs.

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What is a drug discovery screening library?

A drug discovery screening library is a curated collection of compounds, biological reagents or cellular tools used to identify active molecules that interact with a target or disease pathway. We offer both small molecule and antibody screening libraries.

How do you select the appropriate screening library?

Library selection depends on disease biology, target class, desired chemical diversity, screening format and downstream development goals. Our scientists help design a strategy aligned to your program objectives.

Can screening libraries be customized?

Yes. Our scientists and computational chemists can design bespoke screening collections based on target biology, therapeutic area and project goals.

Do you provide support beyond compound screening?

Yes. We support hit identification, hit-to-lead programs, medicinal chemistry, translational strategy and integrated discovery services.

How does clinical insight improve screening outcomes?

Clinical insight helps ensure that discovery decisions are informed by patient need, disease mechanisms and translational considerations, improving confidence in downstream candidate selection.

Drug Discovery Screening Libraries