2,2'-Azino-di(3-ethyl-benzthiazoline sulphonic acid (6)), ammonium salt 28752-68-3 30931-67-0 6-BENZOTHIAZOLINESULFONIC ACID, 2,2'-AZINOBIS(3-ETHYL-, AMMONIUM SALT (1:2) 6-Benzothiazolesulfonic acid, 2,2'-azinobis(3-ethyl-2,3-dihydro-, diammonium salt ABTS Diammonium 2,2'-azinobis(3-ethyl-2,3-dihydrobenzothiazole-6-sulphonate) EINECS 250-396-6