disodium 4-[2-[(1-oxododecyl)amino]ethyl] 2-sulphonatosuccinate

4-Oxo-4-[[2-[(1-oxododecyl)amino]ethyl]oxy]-2-sodiosulfobutanoic acid sodium salt

2-(Sodiooxysulfonyl)-4-[[2-(dodecanoylamino)ethyl]oxy]-4-oxobutanoic acid sodium salt