I was just looking at the structure of Azaguanine-8 (also at other places) and noted these two names:
- 5-amino-2,3-dihydro-7H-[1,2,3]triazolo[4,5-d]pyrimidin-7-one (depicted in 2D)
That seems to suggest we have names here for two tautomers (correct?). ChemSpider lists InChIs, but all without the fixed-hydrogen layer. Now, my use case involves knowing the exact tautomer, and was wondering if there are databases that provide InChIs for exact tautomers, so with this fixed-hydrogen layer. Where can I go?