1,1,1,1-Kestohexaose (Standard) is the standard substance of 1,1,1,1-Kestohexaose, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. 1,1,1,1-Kestohexaose (1,1,1,1-Kestohexose) is a natural product isolated from Poa ampla.