![](https://cdn.prod.website-files.com/650867962272bf8f15c1034b/65cfb01173acc8aa0f7201e8_1-how_to_perform_a_reaction_search_for_known_substances_with_cas_scifindern.webp)
How to perform a reaction search for known substances with CAS SciFinder
Find reactions using a substance name or CAS Registry Number.
![](https://cdn.prod.website-files.com/650867962272bf8f15c1034b/65cfb0892503dd68a0be497e_cas-scifinder-reaction-searching-ffrom-drawn-schemes_1.webp)
Reaction searching from drawn schemes with CAS SciFinder
Find reactions using the CAS Draw tool.
![](https://cdn.prod.website-files.com/650867962272bf8f15c1034b/65cfc2320334ad55465425c3_3-how_to_filter_reaction_search_results_sets_with_cas_scifindern.webp)
How to filter reaction search results sets with CAS SciFinder®
Use filters to refine your reaction search results more effectively.
![](https://cdn.prod.website-files.com/650867962272bf8f15c1034b/65cfc29669bf52dcf6b24ace_how_to_perform_a_retrosynthetic_analysis_using_cas_scifinder-n_0.webp)
How to perform a retrosynthetic analysis using CAS SciFinder
Make reaction plans with conditions, yields, catalysts, and experimental procedures.
![](https://cdn.prod.website-files.com/650867962272bf8f15c1034b/65cfc35836be104c9ee3acfd_4-cas_scifinder_help_documentation.webp)
CAS SciFinder help documentation
Search reactions in CAS SciFinder.