137319-26-7 1H-Pyrrolo(2,3-d)pyrimidine-5-carboxamide, 2-amino-N-(3-aminopropyl)-4,7-dihydro-4-oxo- Echiguanine B N-(3-Aminopropyl)-2-amino-4-hydroxy-7H-pyrrolo(2,3-d)pyrimidine-5-carboxamide