4-acetamido-4'-maleimidylstilbene-2,2'-disulfonic acid, disodium salt
from
Molecular Probes (Invitrogen)
Description
Our 4-acetamido-4'-maleimidylstilbene-2,2'- disulfonic acid is a thiol-reactive reagent that is water soluble, with high polarity and membrane impermeability. This polysulfonated dye is useful for determining whether thiol-containing proteins and polypeptide chains are exposed at the extracellular or cytoplasmic membrane surface.