1-((3-(2,5-Dihydro-2,5-dioxo-1H-pyrrol-1-yl)benzoyl)oxy)-2,5-dioxo-3-pyrrolidinesulfonic acid 103848-62-0 3-Pyrrolidinesulfonic acid, 1-((3-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)benzoyl)oxy)-2,5-dioxo- Sulfo-mbs Sulpho-mbs m-Maleimidobenzoyl-N-hydroxysulfosuccinimide ester m-Maleimidobenzoyl-N-hydroxysulphosuccinimide ester