CAS No: 1567836-15-0 (Free Acid) Chemical Name: 1,4-Bis[Carboxymethyl-(4-methoxy-benzenesulfonyl)-amino]-naphthalene disodium AOBIOUS launched this product as acid form in 2016 CITATIONS - Publications That Use AOBIOUS Product 1) Redox Biol. 2021 Dec; 48: 102186.