REAL Space

Billions of make-on-demand molecules

The REAL Space comprises 21 billion make-on-demand molecules and is currently the largest offer of commercially available compounds. The REAL compounds in the Space are assembled via more than 170 well-validated parallel synthesis protocols applied to over 112 000 qualified reagents and building blocks. The synthetic protocols include standard and advanced one-pot procedures. They differ in the number of steps, type of purification, and compound handling, and therefore in the effort required to deliver the products. Please contact us at This email address is being protected from spambots. You need JavaScript enabled to view it. for more details.

The REAL space is not an enumerated database in a general sense: all search results are generated on the fly if they possess the same features as the query. The Space is currently accessible via InfiniSee. InfiniSee is a chemoinformatics software developed jointly with BioSolveIT. InfiniSee vast resource allows for efficient hit exploration: from finding previously unknown analogs to scaffold hopping. Instead of using a Tanimoto similarity metric, the tool employs pharmacophore-style features which are not tied rigidly to substructure patterns and are more related to the properties. Therefore, the tool provides an escape from the availability bias of current in-stock screening collections towards IP-free areas.

Amazingly, but chemical space of 21 billion compounds is stored in an archive of merely a few hundred megabytes, and the average search time on a standard computer is between 2 and 4 minutes.

Some facts about accessing the REAL Space via InfiniSee:

  • the compounds generated are virtual but they are the REAL – readily accessible
  • synthesis time is 3-4 weeks with an average success rate of over 80%
  • 21 billion molecules: the world's largest, ultra-fast searchable chemical space
  • search time 2 to 4 minutes on average for a typical lead
  • exceptional scaffold hopping capabilities to explore IP free areas


You can download and try InfiniSee here.


InfiniSee is super-easy to use. Yet, just in case, here is a little bit of help.

REAL compounds


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