Dimethylallyl pyrophosphate (or -diphosphate) (DMAPP) is an intermediate product of both Mevalonic acid (MVA) pathway and DOXP/MEP pathway. It is an isomer of Isopentenyl diphosphate (IPP) and exists in virtually all life forms.

Precursor of DMAPP in the MVA pathway is Mevalonic acid, and 2-C-Methyl-D-erythritol-e-P in the DOXP/MEP pathway.

We believe today, that there is crossover between the two pathways, in organisms that use both pathways to create isoprenoids, like in plants, and that DMAPP is the crossover product.