D-Glucose-6-phosphate (sodium salt)

D-Glucose-6-phosphate (sodium salt) (CAS No.: 54010-71-8) is a central endogenous metabolic intermediate that occupies a pivotal position in cellular carbohydrate metabolism, serving as a key node linking glycolysis, glycogen synthesis, and the pentose phosphate pathway. Generated intracellularly through phosphorylation of glucose by hexokinase or glucokinase, or via interconversion from glucose-1-phosphate by phosphoglucomutase, this metabolite plays essential roles in energy production and biosynthetic processes. It functions as the initiating substrate for glycolysis and the pentose phosphate pathway, thereby contributing to ATP generation and the production of NADPH, which is critical for maintaining cellular redox homeostasis and supporting anabolic reactions. Dysregulation of its metabolism is associated with metabolic disorders such as glycogen storage disease type I, highlighting its importance in glucose homeostasis and liver function. In biomedical research, D-glucose-6-phosphate sodium is widely utilized as a biochemical substrate in enzymatic assays and metabolic flux analyses to investigate pathway activity, enzyme kinetics, and cellular bioenergetics, particularly in studies of cancer metabolism where glycolytic reprogramming and pentose phosphate pathway activation are prominent. While it does not act as a direct pharmacological inhibitor or receptor ligand, its functional role as a metabolic substrate underlies its utility in probing enzyme systems and pathway dynamics, typically at concentrations ranging from low micromolar to millimolar levels depending on assay conditions, with experimental dosing tailored to specific in vitro or in vivo study designs.