Geranyl pyrophosphate is an intermediate in the mevalonate pathway. It is formed from dimethylallyl pyrophosphate and isopentenyl pyrophosphate by geranyl pyrophosphatesynthase. Geranyl pyrophosphate is used in the biosynthesis of farnesylpyrophosphate , geranylgeranyl pyrophosphate , cholesterol, terpenes, and terpenoids.