title: Letter: Carbonylbis(L-methionine p-nitrophenyl ester). A new reagent for the reversible intramolecular cross-linking of insulin.
mesh_terms: D004952:Esters; D007202:Indicators and Reagents; D007328:Insulin / Q000138:chemical synthesis*; D008715:Methionine; D008722:Methods; D009596:Nitrophenols; D011384:Proinsulin / Q000031:analogs & derivatives
chemical_list: D004952:Esters; D007202:Indicators and Reagents; D007328:Insulin; D009596:Nitrophenols; D011384:Proinsulin; D008715:Methionine