Your subscription number for an ACS journal can be found on the mailing label of each mailed issue. The FIRST 8 DIGITS of the long number at the top of the mailing label compose the 8-digit subscriber number required to access various online features of your journal subscription. Often a subscriber may have the same subscription number for all journals to which he/she subscribes; however, this is not always the case. Please make a note of the subscription number for each ACS journal to which you subscribe.

This is where the subscription number is located on each mailing label.

NOTE: Not all number sequences are the same on each label!

1. Eight digits as 01343444 for example.
   Enter the eight digits as both name and password when prompted.
   Example: 01343444.
   
   
2. Seven digits followed by an alphabetical character.
   Example: 1234567X.
   In this case, drop the alpabetical character at the end and add a zero to the front.
   Example: 01234567.
   
   
3. Seven digits followed by a space and several more digits.
   Example: 1234567 432.
   In this case, enter only the first 7-digits.
   Example: 1234567.

If you have any further questions or comments, please contact the ACS Member and Subscriber Services Department via email service@acs.org or telephone at 1-800-333-9511 (US only) or 614-447-3776 (outside the US).