Pyrophosphoric acid

Molecular Formula: O₇P₂^-4

InChI: InChI=1/H4O7P2/c1-8(2,3)7-9(4,5)6/h(H2,1,2,3)(H2,4,5,6)/p-4/fO7P2/q-4

InChIKey: InChIKey=XPPKVPWEQAFLFU-QZFAXEOVCF
SMILES: [O-]P([O-])(=O)OP([O-])([O-])=O

CAS number 14000-31-8

Names:
    dioxido-oxo-phosphonatooxy-phosphorane
    Diphosphate
    DIPHOSPHATE
    Diphosphate
    diphosphate(4-)
    PPi
    Pyrophosphate
    pyrophosphate ion
    Pyrophosphoric acid
    P2O74−
    [O3POPO3]4−

Registries:
    PubChem CID 644102
    CAS 14000-31-8 (from NIST)
    ChEBI 18361
    chemPDB DPO
    Gmelin 26938
    Kegg C00013
    PubChem ID 14843181
    PubChem ID 3315