3-(5-amino-7-oxo-3H-triazolo[5,4-d]pyrimidin-2-yl)benzoic acid 3-(5-amino-7-keto-3H-triazolo[5,4-d]pyrimidin-2-yl)benzoic acid 3-(5-amino-7-oxo-3H-[1,2,3]triazolo[5,4-d]pyrimidin-2-yl)benzoic acid 3-(5-AMINO-7-HYDROXY-[1,2,3]TRIAZOLO[4,5-D]PYRIMIDIN-2-YL)-BENZOIC ACID A45