Hi Cristina,

Thanks for the question. The link to our registration page is broken. However, you have now already registered with the account you used to make the above post. You may use that username and password to log into the Razors.

The 'guest' account has been removed for security reasons, I apologize for keeping that option on the login screen, but all of our efforts are now focused on ChemDoodle, so we will not be fixing these issues. Note that the Razors are still being developed and will be released as advanced widgets in a later version of ChemDoodle. This way their graphical user interface will constantly be improved and you may use simulated spectra in your chemical documents.

Let me know if you have any other questions.

Bests,
Kevin