Date	Severity	Status	Feedback
Aug 8 2022 9:21AM	High	Acknowledged	The SMILES of urea seems to be wrong, as it represents its tautomer. On ChemSpider, the InChI is considered the key fact, and the InChI treats these two tautomers as the same structure, so this record is for both tautomeric forms.
Oct 11 2008 5:43PM	Low	Fixed	Urea gives me both the regular compound and the 13C isotope. Since they're actually both urea, how should we deal with this in the future? Is there already a way to deal with isotopes? Fixed...I removed the abel urea from the Urea-13C