Description_x000D_ Application_x000D_ Glucose-1,6-bisphosphate and fructose-1,6-bisphosphate were used as bisphosphorylated glycan standards in mass spectrometry analysis to determine if pyrophosphate ions observed in lipid A from Gram-negative bacteria were artifacts produced by condensation of two phosphate groups in the dissociating ion. α-D-Glucose 1,6-bisphosphate is used in the identification, differentiation and characterization of α-phosphoglucomutase(s), β-phosphoglucomutas(s) and α- and β-hexoglucomutase(s)._x000D_ a-D-Glucose 1,6-bisphosphate is used in the identification, differentiation and characterization of a-phosphoglucomutase(s), ß-phosphoglucomutase(s) and a- and ß-hexoglucomutase(s)._x000D_ Packaging_x000D_ 10, 25, 100, 250 mg in poly bottle_x000D_ 5 mg in glass bottle_x000D_ Biochem/physiol Actions_x000D_ Glucose-1,6-bisphosphate and fructose-1,6-bisphosphate were used as bisphosphorylated glycan standards in mass spectrometry analysis to determine if pyrophosphate ions observed in lipid A from Gram-negative bacteria were artifacts produced by condensation of two phosphate groups in the dissociating ion._x000D_ Metabolite formed via the activity of Glucose-1,6-biphosphate synthase. Glucose-1,6-biphosphate (G-1,6-BP) acts as an inhibitor of hexokinase function and an activator of phosphofructokinase-1 and pyruvate kinase. G-1,6-BP also acts as a coenzyme for phosphoglucomutate and a cofactor for phosphopentomutase._x000D_ Quality_x000D_ Synthetic