The chemical ABTS has a known molecular formula of C18-H16-N4-O6-S4.2H4-N, C18-H18-N4-O6-S4.2H3-N. Synonyms may include: ABTS diammonium salt, 2,2'-Azino-di(3-ethyl-benzthiazoline sulphonic acid (6)), ammonium salt, 6-Benzothiazolesulfonic acid, 2,2'-azinobis(3-ethyl-2,3-dihydro-, diammonium salt, EINECS 250-396-6 (ChemID).