Sulfo-egs crosslinker or ethylene glycol bis (sulfosuccinimide succinate) is a water-soluble isofunctional crosslinker that is not permeable to cell membranes and can be used to label cell surface proteins.
Sulfo-MBS Crosslinker is a non-cleavable, water-soluble, heterobifunctional protein crosslinking reagent. It is commonly used to crosslink haptens to carrier proteins and enzymes to antibodies.