Synonyms: 4H-Pyrrolo[2,3-d]pyrimidin-4-one,2-amino-1,7-dihydro- (9CI); 7H-Pyrrolo[2,3-d]pyrimidin-4-ol, 2-amino- (6CI);2-Amino-3,7-dihydropyrrolo[2,3-d]pyrimidin-4-one;2-Amino-4-hydroxy-7H-pyrrolo[2,3-d]pyrimidine;2-Amino-4-hydroxypyrrolo[2,3-d]pyrimidine;2-Amino-7H-pyrrolo[2,3-d]pyrimidin-4-ol; 7-Deazaguanine; NSC 62498