1-(Acetyloxy)-2,5-dioxo-3-pyrrolidinesulfonic acid 152305-87-8 3-Pyrrolidinesulfonic acid, 1-(acetyloxy)-2,5-dioxo- 3-Sulfosuccinimid-1-yl acetate Sulfo-nhs-acetate Sulfosuccinimidyl acetate Sulfosuccinimidyl-acetate