Gaboriaud, R. published the artcileDetermination of the pKa of very weak acids by extrapolation methods in water-dimethyl sulfoxide media, SDS of cas: 1821-27-8, the publication is Bulletin de la Societe Chimique de France (1976), 1093-8, database is CAplus.
The empirical function pK(AH)-pK(reference) = ¦Á + ¦Âg(S) for solvent blends introduced earlier (1973), was applied to indole, Ph2NH, PhNH2, and aminopyridine derivatives dissolved in aqueous DMSO. The linear correlation readily permits an extrapolation to calculate pK values at 20¡ã for solutions in pure H2O (g(S)). The pK values correspond well with values determined in concentrated LiOH, NaOH, and KOH solutions
Bulletin de la Societe Chimique de France published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, SDS of cas: 1821-27-8.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia