Chemical library

A chemical library is a collection of stored chemicals usually used ultimately in high-throughput screening or industrial manufacture. Chemical libraries are used by pharmaceutical companies, biotechnology companies, and academic research institutions for the purpose of drug discovery and other research applications.

An assay plate carousel used in high-throughput screening.

Composition

Chemical libraries can vary in size from a few hundred to several million compounds. They are typically composed of small organic molecules, peptides, nucleic acids, or other biomolecules. The compounds in a chemical library are often stored in microtiter plates or other formats that facilitate automated handling and screening.

High-Throughput Screening

High-throughput screening (HTS) is a method used to quickly conduct millions of chemical, genetic, or pharmacological tests. The results of these experiments provide starting points for drug design and for understanding the interaction or role of a particular biochemical process in biology. Chemical libraries are essential for HTS, as they provide the diverse set of compounds needed to identify potential lead compounds.

Design and Synthesis

Chemical libraries can be designed and synthesized using various strategies, including:

• Combinatorial chemistry: This involves the systematic and repetitive combination of a set of different building blocks to create a large number of compounds.
• Diversity-oriented synthesis: This approach aims to create a library with a wide range of chemical structures and properties.
• Fragment-based drug discovery: This involves screening small chemical fragments that bind to the target protein and then optimizing these fragments into more potent compounds.

Applications

Chemical libraries are used in various applications, including:

• Drug discovery: Identifying new therapeutic agents by screening compounds for biological activity.
• Chemical biology: Studying the interaction of small molecules with biological systems to understand their function.
• Functional genomics: Using small molecules to modulate gene expression and study gene function.

Related Pages

• High-throughput screening
• Combinatorial chemistry
• Drug discovery
• Pharmaceutical industry