Dimethylallyl pyrophosphate
（重定向自Isoprenyl pyrophosphate）
![Mevalonate pathway](/Images/godic/202501/21/Mevalonate_pathway.svg1115.png")
![Simplified version of the steroid synthesis pathway with the intermediates isopentenyl pyrophosphate (IPP), dimethylallyl pyrophosphate (DMAPP), geranyl pyrophosphate (GPP) and squalene shown. Some intermediates are omitted.](/Images/godic/202501/21/Sterol_synthesis.svg1115.png")
Dimethylallyl pyrophosphate (or alternatively, -diphosphate(DMADP)) (DMAPP) is an intermediate product of both mevalonic acid (MVA) pathway and DOXP/MEP pathway. It is an isomer of isopentenyl pyrophosphate (IPP) and exists in virtually all life forms. The enzyme isopentenyl pyrophosphate isomerase catalyzes the isomerization of DMAPP from IPP.