3,6-Dihydro-7H-1,2,3-triazolo[4,5-D]pyrimidin-7-one2683-90-1100 % similar 3H-1,2,3-Triazolo[4,5-D]pyrimidin-7-amine1123-54-255 % similar Hypoxanthine68-94-052 % similar 3H-1,2,3-Triazolo[4,5-D]pyrimidine-5,7(4H,6H)-dione1468-26-450 % similar 7-Deazahypoxanthine3680-71-542 % similar 5-Fluoro-6-hydroxy-4(3H)-pyrimidinone106615-61-637 % similar 8-Azaguanine134-58-734 % similar Allopurinol315-30-033 % similar Quinazolinone491-36-131 % similar 6-Hydroxy-5-nitro-4(3H)-pyrimidinone2164-83-231 % similar