Robuta

https://pubchem.ncbi.nlm.nih.gov/bioassay/1120279 AID 1120279 - Conversion of compound to its pyrophosphate assessed as acid dissociation constant... BioAssay record AID 1120279 submitted by ChEMBL: Conversion of compound to its pyrophosphate assessed as acid dissociation constant (second deprotonation).