The author of 《The reactivity of dopamine precursors and metabolites towards ABTS·-: an experimental and theoretical study》 were Dimic, Dusan; Milenkovic, Dejan; Markovic, Zoran; Markovic, Jasmina Dimitric. And the article was published in Journal of the Serbian Chemical Society in 2019. Reference of ABTS Diammonium The author mentioned the following in the article:
The antiradical activity of L-3,4-dihydroxyphenylalanine (L-DOPA), dihydroxyphenylacetic acid (DOPAC), homovanillic acid and tyrosine towards 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt radi- cal (ABTS·-) was investigated exptl. and theor. by UV-Vis spectroscopy and the DFT theory. The importance of the catechol moiety for this reaction was proven due to the formation of intramol. hydrogen bond in the formed anions and radicals. The results indicated L-DOPA and DOPAC were more potent radical scavengers than homovanillic acid and tyrosine just because of intramol. hydrogen bond formation. Based on exptl. spectra, it was proved that electron transfer led to the reduction of ABTS·. The values of thermodn. parameters were used to predict the preferred mech- anism. The reaction rates were calculated for the electron transfer processes and it was shown that these were both kinetically and thermodynamically driven processes. Based on the reaction rate values, thermodn. para- meters, and present species, as determined by electronic spectra, it was con- cluded that single proton loss electron transfer (SPLET) is the dominant react- ion mechanism in the investigated system. After reading the article, we found that the author used ABTS Diammonium(cas: 30931-67-0Reference of ABTS Diammonium)
ABTS Diammonium(cas: 30931-67-0) belongs to anime. Reduction of nitro compounds, RNO2, by hydrogen or other reducing agents produces primary amines cleanly (i.e., without a mixture of products), but the method is mostly used for aromatic amines because of the limited availability of aliphatic nitro compounds. Reduction of nitriles and oximes (R2C=NOH) also yields primary amines.Reference of ABTS Diammonium
Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica