Farnesyl diphosphatase (EC 3.1.7.6, FPP phosphatase) is an enzyme with systematic name (2E,6E)-farnesyl-diphosphate diphosphohydrolase. This enzyme catalyses the following chemical reaction Farnesyl diphosphatase (EC 3.1.7.6, FPP phosphatase) is an enzyme with systematic name (2E,6E)-farnesyl-diphosphate diphosphohydrolase. This enzyme catalyses the following chemical reaction The enzyme is involved in the biosynthesis of acyclic sesquiterpenoids.