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P8810 Sigma

Phytic acid sodium salt hydrate

from rice

Synonym: myo-Inositol hexakis(dihydrogen phosphate), Inositol hexakisphosphate, Inositol hexaphosphoric acid, InsP6

  • CAS Number 14306-25-3 (anhydrous)

  • Empirical Formula (Hill Notation) C6H18O24P6 · xNa+ · yH2O

  • Molecular Weight 660.04 (anhydrous free acid basis)

  •  EC Number 238-242-6

  •  PubChem Substance ID 24898983


Related Categories Carbohydrates, Cell Biology, Functional Foods, Nutrition Research, Sugar phosphate More...
biological source   from rice
composition   Sodium (Na), ≥5 mol/mol
cation traces   Ca: ≤2%


Analysis Note

Inorganic phosphorus content is not determined on this product.

Biochem/physiol Actions

Phytic acid is present in all eukaryotic cells. In plants, it is known to function as a [PO4]3− storage depot and precursor for other inositol phosphates and pyrophosphates. Its high surface negative charge makes it a potent chelator of divalent and trivalent cations in vitro, and it is most likely associated with Ca2+ or Mg2+ ions in vivo. In yeast, phytic acid acts with the nuclear pore protein Gle1 to regulate the nuclear export of mRNA by coactivating the RNA-dependent ATPase activity of DExD-box protein 5 (Dbp5).

General description

Phytic acid is a major determinant of zinc bioavailability.


10, 25, 100, 500 g in glass bottle


Phytic acid has been used in a study to assess the common bean’s potential as a vehicle for iron biofortification. 1 It has also been used in a study to investigate the effects of antinutritional factors on plasma lipoprotein levels. 2

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