
The power of the human connection
The scientists who build the CAS Content Collection™ are united by a shared purpose: accelerating discoveries that improve lives.
Every day, they curate, connect, and analyze global literature, knowing their work impacts thousands of research projects worldwide.
Expert curation delivers reliable data
Hundreds of scientists with expertise spanning chemistry, biology, materials science, and specialized fields curate the CAS Content Collection.
Our curation model combines:
- Expert judgment: Understanding context, catching errors, making critical connections
- Advanced technology: AI and machine learning to process volume and identify patterns
- Rigorous quality: Multi-layer validation to ensure every data point is accurate
While technology helps us process 100,000+ documents daily, human intelligence ensures the connections are meaningful and the insights are trustworthy.


Uniting Global Knowledge
Scientific publications are published worldwide in diverse formats, languages, and styles. Critical insights are buried in dense documents, trapped in images and diagrams, expressed in specialized notation, or disclosed in languages most researchers can't read.
Talented CAS scientists and researchers transform what others cannot. What the scientific world publishes in fragments, they deliver as structured, connected, decision-ready knowledge.
The CAS Content Collection curation process
How unstructured, disconnected research becomes a unified, searchable resource
Aggregate
Extract
Standardize
Connect
Validate
The result
A unified knowledge base created for scientists by scientists where a single query draws on a century of curated, connected scientific knowledge across disciplines, languages, and decades.
FAQ
Who uses the CAS Content Collection?
Researchers, regulators, IP professionals, and innovation leaders worldwide rely on the CAS Content Collection to make confident decisions.
Whether you are developing new therapies, safeguarding intellectual property, ensuring regulatory compliance, or building science-smart AI models, the CAS Content Collection provides a trusted foundation.
How is the CAS Content Collection different from CAS REGISTRY®?
- CAS REGISTRY® is the authoritative database of chemical substances (300M+).
- The CAS Content Collection™ includes substances plus reactions, references, sequences, properties, and semantic relationships harmonized across disciplines.
Think of CAS REGISTRY as “what the substances are” and CAS Content Collection as “everything connected to them.”
What is the CAS Content Collection?
The CAS Content Collection is the largest human-curated scientific data resource in the world.
It includes harmonized content from journals, patents, and authoritative sources across disciplines. Scientists review, structure, and enrich every record to ensure accuracy, consistency, and usability.
- Covers 150+ years of scientific literature
- Includes data from 109 patent authorities and 50+ languages
- Powers CAS solutions and AI-ready platforms
How often is the CAS Content Collection updated?
Daily. CAS scientists process 100,000+ documents per day across 50+ languages.
Have another question?
We are here to help. If you need assistance with CAS data, products, access, or account support, you can reach the CAS Customer Center for personalized help. CAS Customer Center is the central source for all inquiries, including product questions, account support, billing, documentation, and search strategy guidance.
Real world impact

Conjunto de dados personalizado para treinamento de machine learning acelera a otimização do fluxo de síntese orgânica

Estabelecendo novos padrões de precisão preditiva em IA com dados de treinamento personalizados


