123752-07-8 2-Amino-1,6-dihydro-6-oxo-7H-purine-7-butanal 2-Amino-1,7-dihydro-7-(4-oxobutyl)-6H-purin-6-one 7-(4-Oxobutyl)guanine 7H-Purine-7-butanal, 2-amino-1,6-dihydro-6-oxo- 7OBuG