CAS Full Text Options, or CAS FTO henceforth, provides scientists and information professionals with links to full-text electronic documents from a large and growing group of scientific publishers, subscription agents, patent offices, and patent document services.

CAS FTO is provided free of charge through a collaboration of Chemical Abstracts Service^®, FIZ-Karlsruhe, and the Japan Association for International Chemical Information (JAICI).

The full-text options for the document you requested are generated at the time of your request. You may see a screen that asks you to wait "One moment please" while links to the options are being generated.

Documents may be available via the following full-text options:

• Your organization's document resources (requires setup by the Site Administrator)
• Web-based document resources
• Fee-based document services

The full-text options available vary from document to document, depending on the journal, patent country, publication year, and other factors. CAS FTO uses your IP Address to verify your journal subscriber status with some publishers.

The CAS FTO page provides several options for obtaining the full text of the document of interest.

Your organization's document resources Link to your organization's document services If your Site Administrator has set up the In-house Link option, a link to your organization's library is displayed. Click the link to access document services within your organization. If a blue check mark () displays, the Site Administrator has confirmed that this journal is available within your organization. In-house Document Request If your Site Administrator has set up the In-house Document Request option, a link to an email request form is displayed. Click the link to access the form and submit your request.   Web-based document resources HTML and PDF Click the HTML link to access the electronic full-text article in HTML format via the publisher's web site. Click the PDF link to access the electronic full-text article in PDF format via the publisher's web site. Most publishers provide articles in PDF. Some publishers provide both HTML and PDF. If a blue check mark () displays, the Site Administrator has confirmed that your organization has purchased access to this electronic journal. In most cases, the publisher verifies your subscriber status by checking your Internet Protocol (IP) address. In some cases, you may be asked for another form of identification, such as a user name or password. Although CAS FTO is free of charge, users must make their own arrangements with the publisher for access to electronic electronic articles. European Patent Office Click the Espacenet link to access the full text of the patent or its reference document at the EPO web site. All patent documents covered by the EPO in its worldwide database are provided free of charge. United States Patent and Trademark Click the USPTO link to access the full text of the patent at the USPTO web site. All patent documents covered by the USPTO in its full-text database are provided free of charge. A free plug-in needed for viewing the USPTO full-page TIFF images is provided at the USPTO site. Japan Patent Office Click the JPO link to access the full text of the patent at the JPO web site. All patent documents covered by the JPO in its full-text database are provided free of charge. Korea Intellectual Property Rights Information Service Click the KIPRIS link to access the full text of the patent at the KIPRIS web site. All patent documents covered by the KIPRIS in its full-text database are provided free of charge. China National Intellectual Property Administration (CNIPA) Click the CNIPA link to access the full text of the patent at the CNIPA web site. All patent documents covered by the CNIPA in its full-text database are provided free of charge.   Fee-based document services Download Document Click the Download Document link to learn the price of the document and how to purchase it online quickly and easily. If your access to CAS FTO is via SciFinder, the charge for the document will appear on you SciFinder invoice. If your access is via any STN service, the charge will appear on your STN invoice. If your access was via any other route, you will be prompted for an STN login ID and password when you click the Buy Now button. For information on establishing an STN account, visit one of the following locations (North America / Europe / Japan / Other) Order Document Click the Order Document link to order a hard copy of the article(s) of interest through a document delivery service. Billing options vary by delivery service.

The "Email Reference" feature is available if you are logged in to CAS FTO. It is a free service that allows you to email the article title, author(s), and journal title to a colleague.

• The "Subject" line of the email is the Document Title.
• Enter the email address of the recipient(s) in the "To" and/or "Cc" fields.
• Enter your comments or message in the "Comments" field.

Note: This feature may have been disabled by your Site Administrator.

If CAS FTO can identify you as an STN or SciFinder customer, customized Full Text options are provided automatically. If you are not identified automatically, you can still log in (click the Login link on the left-hand side of the page).

For added security, even if CAS FTO has identified you automatically, you may still be required to log in to use additional options for obtaining full text.

You must log in to use the Email Reference feature.

In general, browsers that support HTML 3.0 with tables and forms will display pages from this site. Recent versions of Mozilla Firefox and Microsoft Internet Explorer have been successfully tested on this site. This site uses browser cookies and is best viewed using 600 x 800 resolution.

CAS FTO is available from Sunday 01:00 to Saturday 22:00 Eastern Time. On the first Saturday of each month, it is only available until 17:00.

CAS FTO sessions time out after 20 minutes of inactivity. Once a time-out occurs, the links are no longer active.