CAS Reactions

The CAS reactions collection provides detailed and dependable data on more than 150 million single and multi-step reactions.

Contact us
Hexagon shaped overlay
3D rendering of interconnected blue molecules representing a chemical structure.

Features

More than 150 million single- and multi-step reactions published in journals, patents, dissertations, and other sources since 1840.

Covers organic and organometallic reactions. Total syntheses of natural products, and biotransformation reactions.

Scientist-curated and enhanced with yield data, detailed reaction conditions, defined substance roles, and experimental procedures.

Daily updates keep you current on the most recent discoveries.

Connections to relevant publications, substance properties, suppliers, and more within the CAS Content Collection™.

Searchable by structure, reaction role, functional group, reaction site, atom mapping, and more.

Latest from CAS Insights™

Drug Discovery

New translational research in immuno-oncology may reach patients who do not respond to current therapies

Immunotherapy is driving precision oncology, but existing immuno-oncology treatments aren’t effective for every patient. Our review of the translational research landscape reveals which targets and therapies are showing promising results in clinical trials.
|Article
Read article
Materials

Advanced materials: innovations making the leap from the lab

MOFs, perovskites, conductive polymers, and AI are reshaping energy storage, sensors, and more. Here's what's moving from proof-of-concept to market.
|Article
Read article
Digital R&D

How data integrity powers AI for patent searching

AI tools are vital to patent searching, but they must have access to structured, indexed data to return reliable, comprehensive results.
|Article
Read article
View all CAS Insights