disodium 2-heptadecyl-1-[(sulphonatophenyl)methyl]-1H-benzimidazolesulphonate

2-Heptadecyl-1-[(sulfophlnyl)methyl]-1H-benzimidazolesulfonic acid disodium salt

1H-Benzimidazolesulfonic acid, 2-heptadecyl-1-(sulfophenyl)methyl-, disodium salt