4H-Pyrrolo(2,3-d)pyrimidin-4-one, 2-amino-5-(((4,5-dihydroxy-2-cyclopenten-1-yl)amino)methyl)-1,7-dihydro-7-beta-D-ribofuranosyl-, (1S-(1alpha,4beta,5beta))- 57072-36-3 58801-21-1 66322-39-2 69536-76-1 NUCLEOSIDE Q Q (nucleoside) Queuosine