Structure via PubChem · Public domain (PubChem)
pyrophosphoric acid
Sign in to saveAlso known as phosphonooxyphosphonic acid, Pyrophosphate, Diphosphoric acid, Pyrophosphorsäure, acide diphosphorique, Diphosphorsäure
chemical compound
Chemical data
- Formula
- H4O7P2
- Molecular weight
- 177.98 g/mol
- IUPAC name
- phosphono dihydrogen phosphate
- SMILES
- OP(=O)(O)OP(=O)(O)O
- InChIKey
- XPPKVPWEQAFLFU-UHFFFAOYSA-N
- XLogP
- -3.2
- Polar surface area
- 124 Ų
- H-bond donors
- 4
- H-bond acceptors
- 7
- Formal charge
- 0
via PubChem
Drug data · ChEMBL
- Max clinical phase
- Phase 2
- Molecule type
- Small molecule
via ChEMBL · EBI
Research
803 papers- Vascular Calcification: Key Roles of Phosphate and Pyrophosphate.International journal of molecular sciences · 2021
- Nudix proteins affecting microbial pathogenesis.Microbiology (Reading, England) · 2020
- Pyrophosphate deficiency in vascular calcification.Kidney international · 2018
- AVP1: One Protein, Many Roles.Trends in plant science · 2017
- General base-general acid catalysis by terpenoid cyclases.The Journal of antibiotics · 2016
via PubMed
Wikidata facts
- Has part
- oxygen
- Mass
- 177.943
Show 7 more facts
- subject has role
- primary metabolite
- Commons category
- Pyrophosphoric acid
- chemical formula
- H₄O₇P₂
- found in taxon
- Homo sapiens
- canonical SMILES
- OP(=O)(O)OP(=O)(O)O
- MCN code
- 2809.20.30
- physically interacts with
- farnesyl diphosphate synthase
via Wikidata · CC0
~3 min read
Encyclopedic overview
Pyrophosphoric acid, also known as diphosphoric acid, is the inorganic compound with the formula H4P2O7 or, more descriptively, [(HO)2P(O)]2O. Colorless and odorless, it is soluble in water, diethyl ether, and ethyl alcohol. The anhydrous acid crystallizes in two polymorphs, which melt at 54.3 and 71.5 °C. The compound is a component of polyphosphoric acid, an important source of phosphoric acid. Anions, salts, and esters of pyrophosphoric acid are called pyrophosphates.
Preparation
Excerpted from Wikipedia’s “pyrophosphoric acid” article, available under the CC BY-SA 4.0 licence.