Obtaining ChemDraw Ultra for Your Personal Computer

Allegheny College has purchased a site license for ChemDraw Ultra, which includes Chem3D and internet access to the ChemINDEX databases. Any person with a valid allegheny.edu email address is entitled to download and install this software on their personally owned computer. If you do not have a valid allegheny.edu email address you will not be able to receive a serial number and the software will not run. This tutorial describes this process.

You must use Internet Explorer or Firefox to download this software. Start at http://sitelicense.cambridgesoft.com/sitelicense.cfm?sid=167 to begin the download process. Enter your allegheny.edu email address in the Site License Verification box and click Submit.


Click Continue when you get the screen confirming that we have a site license.

If you already have a CambridgeSoft account, enter your Allegheny email address and your CambridgeSoft account password. If you have downloaded a previous version of ChemOffice or other CambridgeSoft software, you may already have an active account. If you have forgotten your CambridgeSoft password, click Forgot Your Password? to have it emailed to you. If you have never created a CambridgeSoft account, click Register to create one. You will not be able to download this software without a CambridgeSoft account.


If you are a new user, fill out the required information to create an account and click Register.


From here you will be able to download the software you require. Note that both windows and mac versions are available, though the mac version does not include Chem3D. (Mac users, see the Note, below.) The Windows download is nearly 272 MB so will take a good bit of time to download. The Mac download is about 63 MB.cd5

You will receive an email, sent to the allegheny.edu address you provided, which will include the serial number information that you need to install your software.

Note for Mac Users

You must use Internet Explorer or Firefox to download this software.

If you get an error message when trying to access the download page, follow the instructions on the error message page and you should be able to connect to the download page.