CAS Data

The largest human-curated collection of scientific data in the world, the CAS Content Collection, underpins all of our solutions and relevant data that can be licensed for machine learning and in-house workflow integration.

The largest human-curated collection of scientific data in the world, the CAS Content Collection, underpins all of our solutions and relevant data that can be licensed for machine learning and in-house workflow integration.

CAS REGISTRY®

The authoritative source for chemical substance data

CAS REGISTRY is the standard source relied upon by scientists, manufacturers, regulators, and data scientists worldwide for accurate and complete information on chemical substances and biosequences. Containing chemical names, structures, CAS Registry Numbers®, properties, and a myriad of other data for more than 260 million registered substances, CAS REGISTRY is the hub of the CAS Content Collection.

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CAS References

Insights from over a century of published scientific literature

The CAS reference collection aggregates and connects scientific knowledge from thousands of journals and other sources published globally in more than 50 languages dating back to the early 1800s.

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CAS Patents

Accessible invention details from global intellectual property

CAS patent data covers key invention details from applications published by 64 global patent authorities. This scientist-curated resource makes complex aspects of patent documents including chemical substances, biosequences, Markush structures, assignees, and classification codes searchable and accessible.

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CAS Reactions

Synthetic details to inform planning and process optimization

The CAS reaction collection is the most trusted source for detailed and dependable synthetic organic reaction data. Defined substance roles, reaction conditions, yields, and catalysts for more than 140 million single- and multi-step reactions provide insight that empowers efficient synthesis planning and scale up.

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CAS Commercial Sources

Up-to-date Supplier Catalog Listings for Commercially Available Chemicals

CAS Commercial Sources connects researchers with chemical suppliers by providing an aggregated source of current global chemical catalog data including quantities, prices, and supplier contact information to simplify chemical sourcing and expedite research.

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CAS Formulations

The Largest Consolidated Collection of Formulations Details

A unique collection of detailed information on formulations sourced from journals, patents, and product inserts, CAS Formulations provides the critical information researchers, formulators, and IP professionals need to get safe and effective products to market faster.

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CAS Reactions

Scientists Serving Science

Human intellect is at the heart of CAS. Hundreds of scientists work every day to build the CAS Content Collection. They are passionate about advancing science. They take pride in their work and its importance in enabling critical breakthroughs that improve lives. Collectively, these scientists speak more than 50 languages and embody a wealth of specialized expertise across disciplines. It is this body of collective knowledge that underpins CAS’s unique capabilities.

Human intellect is at the heart of CAS. Hundreds of scientists work every day to build the CAS Content Collection. They are passionate about advancing science. They take pride in their work and its importance in enabling critical breakthroughs that improve lives. Collectively, these scientists speak more than 50 languages and embody a wealth of specialized expertise across disciplines. It is this body of collective knowledge that underpins CAS’s unique capabilities.

Resources