Tos-SS
A sulfonyl-based heterobifunctional reagent containing a tosyl (p-toluenesulfonyl) group for nucleophilic substitution reactions and a disulfide bond (also known as a Disulfide-activated tosyl linker or Tos-SS) for redox-responsive cleavage. Enables efficient conjugation with thiols, amines, or alcohols while maintaining controlled intracellular release capability. Particularly useful for custom bioconjugation strategies requiring sulfonate chemistry and traceless linker applications.

