has primary output purine ribonucleoside diphosphate biosynthetic process purine nucleoside diphosphate biosynthetic process purine ribonucleoside diphosphate metabolic process purine ribonucleoside diphosphate biosynthetic process purine ribonucleoside diphosphate synthesis The chemical reactions and pathways resulting in the formation of purine ribonucleoside diphosphate, a compound consisting of a purine base linked to a ribose sugar esterified with diphosphate on the sugar. purine ribonucleoside diphosphate biosynthesis purine ribonucleoside diphosphate formation GO:0009180 purine ribonucleoside diphosphate anabolism ribonucleoside diphosphate biosynthetic process