title: A colorimetric assay for carbodiimides commonly used in peptide synthesis and carboxyl group modification.
mesh_terms: D002234:Carbodiimides / Q000032:analysis*; D002863:Chromogenic Compounds; D003959:Diamines; D006863:Hydrogen-Ion Concentration; D011725:Pyridines; D013053:Spectrophotometry / Q000379:methods
chemical_list: D002234:Carbodiimides; D002863:Chromogenic Compounds; D003959:Diamines; D011725:Pyridines