D-Myo-inositol 1,4,5-tris-phosphate,*3-deoxy-3-fluor

3-Deoxy-3-fluoro-D-myo-inositol 1,4,5-trisphosphate . hexasodium salt is equipotent to Ins(1,4,5)P3 in releasing intracellular calcium. The 3-position is blocked by fluorine, hence it cannot be converted to Ins(1,3,4,5)P4 by the action of 3-kinases. It may therefore provide a useful tool for studying the complex biochemical pathways in which InsP3 and InsP4 are closely interactive.