Thermo Scientific Pierce Cysteine-HCl is purified, crystalline cysteine hydrochloride salt (MW 175.6) that is useful as a sulfhydryl standard in assay with Ellman's Reagent or as an additive in protein refolding experiments.
Overview of crosslinking and protein modification
All Disulfide Reducing Agents
Antibody Fragmentation Kits
Protein Refolding Kit