Home1,1-Diododecyl-3,3,3,3-tetramethylindodicarbocyanine-5,5-diSulphonic acid [DiIC12(5)-DS]1,1-Diododecyl-3,3,3,3-tetramethylindodicarbocyanine-5,5-diSulphonic acid [DiIC12(5)-DS] ≥95%