CCDC – Cambridge Structural Database

The CCDC provides publicly accessible high-quality information, software, and services amendable to advance chemistry and crystallography. The Cambridge Structural Database (CSD) is a repository for small-molecule organic and metal organic crystal structures in 3D, and the principal product of the CCDC. The CSD system also comprises software for database access, structure visualization and data analysis, and structural knowledge bases derived from the CSD.

Becker Library and Olin Libraries support the CSD subscription, which provides free access to the entire Washington University community.

CSD is available directly on the web from any computer on the Washington University network without registration (CSD system requirements). However, registration is required in order to use advanced software features or download CSD data.

CSD tools

  • Cambridge Structural Database – incorporates a suite of flexible search and analysis tools allowing chemical knowledge to be extracted from raw crystallographic data
  • Mercury – comprehensive range of tools for 3D structure visualization, the exploration of crystal packing and the statistical analysis of CSD search data
  • ConQuest – program for searching and retrieving information from CSD
  • Prequest– enables researchers  to build high-quality databases of in-house or proprietary structures that are then searchable either independently of, or in conjunction with, the CSD
  • Vista – program for the analysis and display of data retrieved from the CSD
  • Mogul -provides precise information on preferred molecular geometries using CSD
  • Isostar -provides thousands of interactive 3D scatterplots that show the probability of occurrence and spatial characteristics of interactions between pairs of chemical functional groups

Other CSD Resources


Becker Library Contact

If you have any questions regarding how to access Cambridge Structural Database, please contact Maze Ndukum at or 314-362-4737.