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New on STN

February 2020

New legal event data from Croatia, Italy, and Poland in INPADOCDB and INPAFAMDB

January 2020

Changes to Derwent WPI Update numbering and the total number of annual DWPI updates

December 2019

Derwent World Patents Index: Manual Code revision 2020

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CAS Information Use Policies - Part 2


a. A User may sort CAS information, edit it, reformat it, and combine it with other CAS information, as long as usage is consistent with the other conditions described in these Policies. Attribution to ACS must be included.

b The building of searchable Project directories or Databases for use by individuals and Project teams is permitted. Each User is permitted to download 5,000 Records for personal use or to share within a Project team for the life of the Project. These Records may be obtained from more than one CAS product as long as the 5,000 limit/User is not exceeded.

c. A User may make electronic or print copies of CAS Records and distribute them to others within the Organization where the User is employed as long as the use constitutes reasonable use. Reasonable use does not include general posting of results
and/or sharing results for the purpose of doing research for others. Copies of CAS Records must display the ACS copyright.

d. An Information Professional may retain copies of search results delivered to Users as Backup for a period not to exceed 1 year.

e. Metadata from CAS Records may be downloaded for an Analysis or Data Mining procedure in compliance with CAS or STN Product licenses. The User or Information Professional must use CAS or STN Analysis or Data Mining tools (with the exception of standard office software such as Microsoft(R) Excel, Word, and PowerPoint(R)). Any Records retained from the task are subject to the limits specified in these Policies. CAS Records retained as a result of the analysis must be consistent with these Policies and display the ACS copyright.

f. An Information Broker, with the exception of the use of SciFinder, may make and provide a copy of CAS information to a customer outside its Organization, for whom it has been engaged to conduct specific searches, provided that the ACS copyright notice is placed on the material. A copy for Backup purposes may be kept for a period not to exceed 1 year. The User may subsequently use the information according to these Policies.

g. A User may distribute CAS information outside of the Organization as follows:

  • in a bibliography of references, provided that the bibliography is supplemental to the main content of the User's own copyrighted or uncopyrighted work
  • in scientific publications such as a critical review, poster, presentation, research report, patent, or other communication. This publication should indicate that CAS information is reprinted by permission of the American Chemical Society
  • in reports to the government when the information and the reports are required by law or administrative policy

h. A User or Organization may include, without a license and without paying a fee, up to 10,000 CAS Registry Numbers or CASRNs in a catalog, website, or other product for which there is no charge. The following attribution should be referenced or appear with the use of each CASRN: CAS Registry Number. is a Registered Trademark of the American Chemical Society. CAS recommends the verification of the CASRNs through CAS Client Services(SM).

i. A User who makes a legal copy of CAS information must make a reasonable effort to prevent the theft or inadvertent illicit dissemination of CAS intellectual property by displaying the following ACS Copyright Notice conspicuously at least once on each packet of information distributed by the User: Copyright Year by the American Chemical Society. All Rights Reserved. (Use the year of publication in the case of printed and microform services; in the case of information derived from an online service, use either the year provided by the online service or the current year.)

For usage exceeding or outside these restrictions, please refer to section V. SPECIAL PERMISSION.