title: Reductive cleavage of S-sulfo groups with tributylphosphine.
mesh_terms: D000603:Amino Acids, Sulfur / Q000032:analysis; D007328:Insulin / Q000032:analysis; D008722:Methods; D010084:Oxidation-Reduction; D010455:Peptides / Q000138:chemical synthesis; D010720:Phosphines; D011506:Proteins / Q000032:analysis; D012260:Ribonucleases / Q000032:analysis
chemical_list: D000603:Amino Acids, Sulfur; D007328:Insulin; D010455:Peptides; D010720:Phosphines; D011506:Proteins; D012260:Ribonucleases