CAS SciFinder®

Built for chemists. Trusted by industry experts.

With over a century of scientific expertise, CAS SciFinder® is the go-to platform for chemistry R&D teams who need to move fast and make decisions confidently. From substance identification to synthesis planning and reference searches, CAS SciFinder delivers curated, connected insights that help you reduce risk, avoid rework, and accelerate innovation.

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Why CAS SciFinder matters for chemistry R&D

In today’s fast-paced research environment, chemists can’t afford to risk their next breakthrough by relying on disconnected systems or incomplete data. Whether you’re developing new materials, optimizing a synthesis route, or scaling up production, every decision depends on fast access to trusted chemical knowledge.

CAS SciFinder integrates substance, reaction, and reference data into a single platform, curated by scientists and updated daily.  


  • Reduce time spent searching for relevant information.
  • Avoid costly failures and wasted materials.
  • Improve collaboration across teams with shared insights.
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Identify with confidence

Without a trusted chemical substance database, your research can be incomplete or unimpactful. Eliminate doubt with expert verified information you can trust.

  • Search by structure, name, or CAS Registry Number®.
  • Access curated data from journals, patents, and more.
  • Utilize AI-interpreted queries that deliver relevant chemical results faster.
Explore substance search
"CAS SciFinder is my preferred research solution because it significantly speeds up the search for specific molecular structures. It is incredibly handy in patent investigations and in finding chemical suppliers, making my research process more efficient and effective."
Head, AH Science & Collaboration
Large enterprise pharmaceuticals company

Drive smarter decisions from lab to launch

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Design and validate synthesis plans

CAS SciFinder provides access to the world’s largest collection of reaction data. View evidence and evaluate alternatives in real time to maximize creativity when designing synthesis plans.

  • Filter reactions by yield, steps, or substance role.
  • View complete schemes, conditions, and experimental procedures.
  • Plan confidently with predictive retrosynthesis.
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Detailed supplier information

Our chemical supplier database includes up-to-date and accurate material listings, product availability, and supplier comparability information and more so you can procure the chemicals you need quickly.

  • Compare commercial suppliers by purity, quantity, and availability. 

  • Link directly to ordering pages from verified global vendors.
  • Acquire accurate, up-to-date regulatory information with CAS Chemical Compliance Index.

Learn more about our chemical supplier data

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Enablement across industries

CAS SciFinder is trusted by R&D teams in: 


  • Pharmaceuticals - for drug discovery, synthesis, and scale-up. 
  • Chemicals and agrochemicals  - for formulation, process development, and compliance
  • Manufacturing - for sourcing, packaging, and process selection.

See how CAS supports various industries

Case study: How CAS SciFinder helped a small chemical company synthesize new polymers

Challenge: A small chemical company needed a comprehensive solution to accelerate the development and regulatory process of developing new polymers.

Solution: The scientist at this organization used CAS SciFinder to assess the IP landscape, devise a synthetic plan, find commercially available chemicals, and more. This allowed the company to design, prepare, and characterize a series of novel building blocks to synthesize their new polymers.

Read the full case study
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Frequently asked questions

What makes CAS-curated data different from other chemical databases? 

Can I search for chemical reactions by specific conditions or roles?

How current is the data in CAS SciFinder?

How does CAS SciFinder use AI? 

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