Date	Severity	Status	Feedback
Jul 2 2010 10:50AM	Normal	Rejected	Carbon 11 , really? Deprecated. Cheers There is nothing wrong with having a C-11 label UNLESS a decision is made across the entire database to remove all radioactively labeled compounds. C-11 is a radioactive label and it is very common to use radioactive tracers for metabolism studies. Not sure why this was deprecated but I have returned it for now as it is likely a real compound.