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 |


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.
CAS SciFinder-n has been available from March 2021.
SciFinder also  can be used .(→ SciFinder explanation page)
The end date of SciFinder is undecided at this time.

【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

Those who do not have a SciFinder Username and are using CAS SciFinder-n for the first time

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)

Those who have a SciFinder Username and want to use CAS SciFinder-n

You can use the same Username and password as SciFinder.

How to migrate SciFinder saved answers and alerts
If you want to migrate SciFinder saved answers and alerts to CAS SciFinder-n, click "★ Saved" in the upper right corner of the CAS SciFinder-n top screen, and click "Migrate Alerts & Saved Results" to migrate.

* Please migrate within the combined period with SciFinder.
* If the SciFinder answer set is saved in .akx format, call the answer in the current SciFinder and then perform the above operation.
(CAS SciFinder-n cannot read .akx files).

※You can check and change registration information from myCAS.


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]

If you would like to use SciFinder, please visit

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.