pyrophosphorous acid

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IUPAC Name :dihydroxyphosphanyl dihydrogen phosphite
InChI :InChI=1/H4O5P2/c1-6(2)5-7(3)4/h1-4H
Std.InChI: InChI=1S/H4O5P2/c1-6(2)5-7(3)4/h1-4H
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InChIKey :ZJIPHXXDPROMEF-UHFFFAOYAX
Std.InChIKey: ZJIPHXXDPROMEF-UHFFFAOYSA-N
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SMILES :OP(O)OP(O)O