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Elsevier
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Reaxys Predictive Retrosynthesis

The award-winning Reaxys Predictive Retrosynthesis helps you boost success rates in synthesis route design by combining high-quality reaction data with AI. Reaxys delivers scientifically robust predictions that have been tried and accepted by medicinal and synthetic chemists in pharma, chemical industry and academia.

Chemist using a computer

Innovation in retrosynthetic analysis

Reaxys has partnered with the most innovative AI companies, Iktos and Pending.AI, to develop best-in-class predictive retrosynthesis models based on Reaxys’ high-quality reaction data. Our customers can select either of the retrosynthesis solutions that best fits their needs to:

  • Ideate quickly: Access predicted routes in minutes, along with experimental procedures, to quickly assess route feasibility and take it to the lab.

  • Unlock synthetic challenges: Get innovative disconnections supported by literature references; validate new ideas with the latest research.

  • Control selectivity: Apply chemo-, regio- and stereoselective strategies to support retrosynthesis of drug-like molecules.

  • Create custom routes: Define intermediaries to include or exclude; add or remove steps to tailor routes to your specific chemistry needs.

  • Control costs: Design routes while limiting the cost of building blocks; all routes end in commercially available starting materials.

  • Upskill teams: Access literature references that informed predicted steps, including conditions and experimental procedures.

AI and the largest database of chemical reactions yields robust predicted retrosynthesis routes

Reaxys Predictive Retrosynthesis

Retrosynthetic analysis once relied solely on a chemist’s expertise and time. The award-winning Reaxys Predictive Retrosynthesis changes that paradigm. It augments your knowledge with robust predicted routes by applying AI to the world’s largest database of chemical reactions. Get faster answers for a broader range of molecules with Reaxys Predictive Retrosynthesis.

Moritz Classen, Carreira Research Group, talks about predictive retrosynthesis

Moritz Classen, Carreira Research Group video thumb

See reaction routes tested in Reaxys Predictive Retrosynthesis by Moritz Classen of the Carreira Research Group, ETH Zurich. Find out why Moritz calls the tool user-friendly and a time saver, while it uncovers "... chemistry you didn’t know anything about — which can be super inspiring."

Using Reaxys Predictive Retrosynthesis

Reaxys Retrosynthesis input screen where structural formula and parameters are entered

Enter the target molecule and select parameters. Choose among parameters for diversity and speed, and from libraries of building blocks. You can also add information from preferred vendors.

Screenshot of the Retrosynthesis section in Reaxys showing various routes for a molecule

Get all published and predicted routes for a molecule in one view. Compare the number of steps per route, the route linearity and confidence ranking. Export routes in multiple formats to share and add to electronic lab notebooks.

Screenshot of the Retrosynthesis section in  Reaxys focusing on substance availability

Find purchasable or in-house starting materials. Integrate your own library of starting materials, stockroom compounds or proprietary molecules.

Contact us about Reaxys Predictive Retrosynthesis

Please complete the form and a Reaxys expert will contact you to discuss your needs and answer your questions about Reaxys Predictive Retrosynthesis.

The award-winning Reaxys Predictive Retrosynthesis helps boost success rates in synthesis route design with:

  • Predicted routes alongside published routes

  • Literature references that informed predicted steps

  • Commercially available starting materials

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