D-myo-Inositol-1,3,5-triphosphate (sodium)
D-myo-Inositol-1,4,5,6-tetraphosphate (D-Ins(1,4,5,6)P4) is one of several different inositol oligophosphate isomers implicated in signal transduction. It almost completely inhibits calcium-activated chloride channels at a concentration of 8-10 μM [1].