英文别名1H-Pyrrolo[2,3-d]pyrimidine-5-carboxylicacid,2-amino-4,7-dihydro-4-oxo-; 3H-Pyrrolo[2,3-d]pyrimidine-5-carboxylic acid, 2-amino-4,7-dihydro-4-oxo-; 2-Amino-4-oxo-3,7-dihydropyrrolo[2,3-d]pyrimidine-5-carboxylic acid; 2-amino-4-oxo-1,7-dihydropyrrolo[2,3-d]pyrimidine-5-carboxylic acid; 2KA; 7-deaza-7-carboxyguanine; 7-carboxy-7-deazaguanine; 7-Carboxy-7-carbaguanine 
