Home1,1-Diododecyl-3,3,3,3-tetramethylindocarbocyanine-5,5-diSulphonic acid [DiIC12(3)-DS]1,1-Diododecyl-3,3,3,3-tetramethylindocarbocyanine-5,5-diSulphonic acid [DiIC12(3)-DS] ≥90%