magnesium glycinate magnesium glycinate magnesium glycinate, also known as magnesium diglycinate or magnesium bisglycinate, is the magnesium salt of glycine (one magnesium and two glycine molecules), and is sold as a dietary supplement. it contains 14.1% elemental magnesium by mass. accordingly, 141 mg of elemental magnesium is contained in 1000 mg of magnesium glycinate. magnesium glycinate names iupac name magnesium diglycinate systematic iupac name magnesium bis(aminoacetate) identifiers cas number 14783-68-7 y echa infocard 100.035.305 pubchem cid 84645 unii ifn18a4y6b y comptox dashboard (epa) dtxsid90163815 properties chemical formula c4h8mgn2o4 molar mass 172.423 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). n (what is yn ?) infobox references uses magnesium glycinate has been studied with applicability to patients with a bowel resection or pregnancy-induced leg cramps.