purines D-ribonucleoside 251.07803 A purine ribonucleoside that is a purine derivative attached to a beta-D-ribofuranosyl residue at position 9 via a glycosidic (N-glycosyl) linkage. 0 C10H11N4O4R2 C1(=*)NC(=NC2=C1N=CN2[C@@H]3O[C@H](CO)[C@@H](O)[C@H]3O)* CHEBI:142355 chebi_ontology a purine D-ribonucleoside 251.219 purine nucleobase purine ribonucleoside D-ribofuranose