The molecule is a pyrrolopyrimidine that is 7-deazaguanine bearing a carboxamidine substituent at the 7 position. It is a pyrrolopyrimidine and a carboxamidine. It derives from a 7-carboxy-7-deazaguanine. It is a conjugate base of a 7-formamidino-7-deazaguanine(1+).
2-amino-4-oxo-3,7-dihydropyrrolo[2,3-d]pyrimidine-5-carboximidamide