Evaluation of 4-tert-Butyl-Benzhydrylamine Resin (BUBHAR) as an Alternative Solid Support for Peptide Synthesis

Figure 4

LC/ESI-MS spectra of the main peaks of crude peptides Gln-Asn-Cys-Pro-(D-Arg)-Gly cleaved from MBHAR (a), BUBHAR (b), and of the contaminant present in the peptide cleaved from MBHAR but lacking the Gln residue (c).

(a)

(b)

(c)