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Databases for Chemists and Chemical Engineers

Chemical Abstracts

SciFinder Scholar | CAS Online | Standard Abbreviations | Index Guide | Guide to CASREACT | Structure Searching with STN Express

Structure searching in CAS Online using STN Express: An introductory workshop

Understanding what happens when a structure search is run

There are two parts to every structure search:

  1. Screen search which “screens out” all structures that do not match a minimum set of requirements for your structure
  2. Iteration search an Atom-by-atom, bond-by-bond comparison with query

Last modified: June 22, 2005

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