(3,6-Bis(3-aminopropyl)-2,5-dihydroxy-2,5-dioxido-1,4,2,5-dioxadiphosphinane-3,6-diyl)bis(phosphonic acid)

This compound is a phosphorus-containing organic molecule used as an impurity reference standard for alendronic acid, a bisphosphonate compound. It is primarily employed in pharmaceutical research and quality control to identify and quantify related substances.