A "test" account enables you to upload data into the pending submissions database, but does not enable you to "commit" the data into the official PubChem database. The test account is just for trying the system to determine if you can successfully upload and see your structure.
When you register for a test account, you must enter your e-mail address. When you go to the next screen, PubChem upload will send a message to your e-mail address with a code that you must enter on the second screen in order to proceed. This confirms the validity of the e-mail address, in order to ensure communications about your PubChem submissions.
When you are read