Bergmann, Felix published the artcileDetermination of uric acid and its thio analogs in biological fluids, Computed Properties of 2642-37-7, the publication is Analytical Biochemistry (1965), 10(1), 73-85, database is CAplus and MEDLINE.
Uric acid and its thio derivatives were separated from plasma proteins by the use of Sephadex. Thiouric acids in plasma were determined spectrophotometrically. Uric acid analysis by enzymic oxidation was not disturbed by the presence of the 2- or 8-thio analog. On the other hand, separation of uric acid and its 6-thio derivative on an anion exchanger must precede determination of the former. The absorption spectra of the mercuric complexes of thiouric acids differed characteristically from the spectra of the free thio derivatives Analysis of thiouric acids in urine was based on the difference in absorbance between Hg(II)-free solutions and those containing the metal ion.
Analytical Biochemistry published new progress about 2642-37-7. 2642-37-7 belongs to indole-building-block, auxiliary class Indole,Salt,Sulfonate,Inhibitor,Inhibitor, name is Potassium 1H-indol-3-yl sulfate, and the molecular formula is C8H6KNO4S, Computed Properties of 2642-37-7.
Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles