This compound belongs to the class of chemical entities known as non-metal pyrophosphates. These are inorganic non-metallic compounds containing a pyrophosphate as its largest oxoanion.
Kukko E, Heinonen J (1982)The intracellular concentration of pyrophosphate in the batch culture of Escherichia coli. European journal of biochemistry 127, Pubmed: 6291941
Synthesis Reference:
Dittmer, Donald C.; Silverstein, V. Opshelor. Production of pyrophosphate from S-n-butyl phosphorothioate. Journal of Organic Chemistry (1961), 26 4706-7.