Drug discovery platform

Chirality can significantly influence drug–target affinity, subtype selectivity, and toxicological profiles. The thalidomide tragedy highlights the profound biological consequences of stereochemistry, making stereochemical evaluation essential in early drug discovery. Three Nobel Prizes in Chemistry—in 2001, 2021, and 2026—have advanced our understanding of chirality, from asymmetric catalysis and stereoselective synthesis to asymmetric autocatalysis and nonlinear effects that explain the propagation and amplification of chiral signals.

Enantiomers (R/S) can exhibit distinct target-binding affinities, subtype selectivity, and pharmacokinetic properties. This library supports enantiomer-specific binding studies using affinity selection–mass spectrometry (AS-MS) and other screening platforms.

Library Highlights: Comprising 2,792 structurally diverse small molecules, the library offers broad chemical space coverage and lead-like physicochemical properties. It supports high-throughput screening across therapeutic targets, hit identification, and preliminary structure–activity relationship (SAR) studies. Complementary stereochemical characterization services facilitate seamless integration into lead optimization programs.

The discovery of hit molecule is a cornerstone of drug development. Among the diverse tools available, DNA-encoded libraries have emerged a revolutionary platform for high-throughput screening. Compared with traditional HTS, DEL features shorter screening processes, lower costs, simpler assays, and larger library capacities.

DEL Construction utilizes split-and-pool synthesis, a combinatorial chemistry approach that involves iterative splitting, reaction, and pooling. This strategy enables rapid, exponential assembly of fragments in minimal steps without the need for individual compound synthesis andassoicicated isolation or purification steps, thus greatly reducing overall costs. The technology enables simultaneous affinity screeningof massive compound collections to target proteins in a single step. By coupling chemical structures with unique DNA barcodes, each compound is tagged with a distinct DNA sequence for convenient tracking and decoding.DELs readily enable the construction and efficient screening of libraries containing millions to billions of compounds. As a result, DEL screening combines the dual advantages of high efficiency and low cost, making DEL a transformative technology in modern drug discovery.

The DEL kit consists of 50 independent libraries with a total scale of 100 billion compounds. It is constructed through stepwise combinatorial chemistry strategies involving 2-, 3-, and 4-round synthesis. By employing diverse scaffolds and flexible linking strategies, it encompasses various ring systems, linear frameworks, and heterocyclic structures. Screening can be achieved solely through affinity, independent of target-specific activity detection methods. This library is suitable for DEL screening against a wide range of targets.