Figure 2

Conjugation efficiencies of p-TEMPO–Bn–Sc–NHS (empty circles) and o-TEMPO–Bz–C(O)–NHS (filled circles) to kinetensin (IARRHPYFL) under three different reaction conditions: (a) water:DMSO (v/v 10:90), (b) water:DMSO (v/v 50:50), and (c) water:DMSO (v/v 90:10).