CAS SciFinder-n(Academic)

Service for University of Tsukuba members only
Members of University of Tsukuba can use the Remote Access Service.

Outline | Access Registration | Use Method/ Manual |


【April 2022】The conventional SciFinder offering ended on March 31, 2022.
【Dec. 2021】The conventional SciFinder will no longer be available in Japan at March 31, 2022.If you need to migrate saved answers and alerts, please complete the migration work by March 31, 2022.
Transition information (JAICI)(in Japanese)


CAS (Chemical Abstracts Service of the America Chemical Society) is a Web-browser compatible database that provides easy access to scientific information, mainly focusing on chemistry.

【Sources】 Patents and articles published such as in journals from around the world, conference proceedings, technical reports, books, etc.

【Available databases】

  • Chemistry article information (CAPlus files):From 1808 ~
  • Chemical substance information (REGISTRY files):Substance information appearing in materials published in and after 1907
  • Organic chemical reaction information (CASREACT files):Reaction information appearing in materials published in and after 1840
  • Commercial chemical product catalog information (CHEMCATS files)
  • Information on regulated chemicals (CHEMLIST files)
  • Medical article information (MEDLINE files):From 1949 ~

※For additional information about CAS SciFinder-n, please refer to the JAICI page.

Access Registeration

You must obtain a username and password before using this service.
Please check the access registration manual in advance and register by clicking the button below.
The registered email address must be the university domain address( . Free mail etc. cannot be used.

Access registration manual (in Japanese)

※You can check and change registration information from Customer Portal.


About multiple ID acquisition
Only one CAS  SciFinder-n ID can be obtained per user.
If your e-mail address changes due to going on to graduate school, please change your registered e-mail address by referring to the materials below. (in Japanese)

About deleting user ID
As one of the measures to prevent unauthorized use of CAS SciFinder-n user ID, accounts that have not been used for a long time will be frozen.
CAS will send a confirmation email in advance to the user to be deleted.
If you wish to continue using CAS SciFinder-n, click the link in the email delivered by CAS by the specified date and it will be excluded from the deletion target.

Use Method/ Manual

[CAS Scifinder-n Connection]

Recommending system environment

[Important notes about the use agreement]
The maximum number of records that can be downloaded at 1 time is 100.
According to the contract, a total of 5,000 records can be downloaded. (When the 5,000 record limit is exceeded, it will not be possible to perform any more downloads.) (Ref: CAS Information Use Policies)

This database can only be used for the purposes of “study and research at University of Tsukuba.” It is not available for use for research by other agencies, or for profit-making purposes.