Sulfo-SMCC. A water-soluble heterobifunctional protein crosslinker, Synonyms:-4-(N-Maleimidomethyl)cyclohexane-1-carboxylic acid 3-sulfo-N-hydroxysuccinimide ester sodium salt, CAS Number:-92921-24-9, Molecular Formula:-C16H1GN2NaO9S, Purity:-G90% by NMR, 10x2mg.