Record Information
Creation date2015-05-07 20:14:13 UTC
Update date2018-05-29 01:54:54 UTC
Primary IDFDB030832
Secondary Accession Numbers
  • FDB021918
Chemical Information
FooDB Namediphosphate
DescriptionPyrophosphate, also known as diphosphoric acid or ppi, is a member of the class of compounds known as non-metal pyrophosphates. Non-metal pyrophosphates are inorganic non-metallic compoundscontaining a pyrophosphate as its largest oxoanion. Pyrophosphate can be found in a number of food items such as bitter gourd, babassu palm, groundcherry, and black crowberry, which makes pyrophosphate a potential biomarker for the consumption of these food products. Pyrophosphate can be found primarily in blood, saliva, and urine, as well as throughout most human tissues. Pyrophosphate exists in all living organisms, ranging from bacteria to humans. In humans, pyrophosphate is involved in several metabolic pathways, some of which include cardiolipin biosynthesis CL(18:0/16:1(9Z)/16:1(9Z)/16:0), cardiolipin biosynthesis cl(i-13:0/a-17:0/i-18:0/a-17:0), cardiolipin biosynthesis cl(i-12:0/i-16:0/a-15:0/a-25:0), and cardiolipin biosynthesis cl(a-13:0/i-24:0/i-22:0/i-14:0). Pyrophosphate is also involved in several metabolic disorders, some of which include hyperinsulinism-hyperammonemia syndrome, methionine adenosyltransferase deficiency, mevalonic aciduria, and g(m2)-gangliosidosis: variant B, tay-sachs disease. Pyrophosphate is a non-carcinogenic (not listed by IARC) potentially toxic compound. In chemistry, a pyrophosphate is a phosphorus oxyanion. Compounds such as salts and esters are also called pyrophosphates. The group is also called diphosphate or dipolyphosphate, although this should not be confused with phosphates. As a food additive, diphosphates are known as E450. A number of hydrogen pyrophosphates also exist, such as Na2H2P2O7, as well as the normal pyrophosphates .
CAS Number14000-31-8
Pyrophosphate ionChEBI
Pyrophosphoric acidGenerator
DIphosphoric acidGenerator
Pyrophosphoric acid ionGenerator
(4-)Diphosphoric acid ionHMDB
Pyrophosphate tetraanionHMDB
Pyrophosphate(4-) ionHMDB
Predicted Properties
pKa (Strongest Acidic)1.7ChemAxon
Physiological Charge-3ChemAxon
Hydrogen Acceptor Count6ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area135.61 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity21.04 m³·mol⁻¹ChemAxon
Polarizability9.06 ųChemAxon
Number of Rings0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Chemical FormulaO7P2
IUPAC name(phosphonooxy)phosphonate
InChI IdentifierInChI=1S/H4O7P2/c1-8(2,3)7-9(4,5)6/h(H2,1,2,3)(H2,4,5,6)/p-4
Isomeric SMILES[O-]P([O-])(=O)OP([O-])([O-])=O
Average Molecular Weight173.9433
Monoisotopic Molecular Weight173.911925378
DescriptionThis compound belongs to the class of inorganic compounds known as non-metal pyrophosphates. These are inorganic non-metallic compounds containing a pyrophosphate as its largest oxoanion.
KingdomInorganic compounds
Super ClassHomogeneous non-metal compounds
ClassNon-metal oxoanionic compounds
Sub ClassNon-metal pyrophosphates
Direct ParentNon-metal pyrophosphates
Alternative Parents
  • Non-metal pyrophosphate
  • Inorganic oxide
Molecular FrameworkNot Available
External Descriptors
OntologyNo ontology term
Physico-Chemical Properties - Experimental
Physico-Chemical Properties - Experimental
Physical stateNot Available
Physical DescriptionNot Available
Mass CompositionNot Available
Melting PointNot Available
Boiling PointNot Available
Experimental Water SolubilityNot Available
Experimental logPNot Available
Experimental pKaNot Available
Isoelectric pointNot Available
ChargeNot Available
Optical RotationNot Available
Spectroscopic UV DataNot Available
DensityNot Available
Refractive IndexNot Available
Spectrum TypeDescriptionSplash KeyView
GC-MSGC-MS Spectrum - GC-MS (4 TMS)splash10-0udi-0320900000-0abbcb28a43d7e24fe81JSpectraViewer | MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-0udi-0320900000-0abbcb28a43d7e24fe81JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-004j-5900000000-6633d5123eb37c266247JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-0002-9000000000-1274b83242b279e9dac7JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-001i-9000000000-69bc4c795fec87fef4b8JSpectraViewer | MoNA
ChemSpider IDNot Available
ChEMBL IDNot Available
KEGG Compound IDNot Available
Pubchem Compound IDNot Available
Pubchem Substance IDNot Available
ChEBI IDNot Available
Phenol-Explorer IDNot Available
DrugBank IDNot Available
HMDB IDNot Available
CRC / DFC (Dictionary of Food Compounds) IDNot Available
EAFUS IDNot Available
Dr. Duke IDNot Available
BIGG IDNot Available
KNApSAcK IDNot Available
HET IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
Flavornet IDNot Available
GoodScent IDNot Available
SuperScent IDNot Available
Wikipedia IDNot Available
Phenol-Explorer Metabolite IDNot Available
Duplicate IDSNot Available
Old DFC IDSNot Available
Associated Foods
FoodContent Range AverageReference
Biological Effects and Interactions
Health Effects / BioactivitiesNot Available
EnzymesNot Available
PathwaysNot Available
MetabolismNot Available
BiosynthesisNot Available
Organoleptic Properties
FlavoursNot Available
MSDSNot Available
Synthesis ReferenceNot Available
General ReferenceNot Available
Content Reference