A special designed resin for research synthesis. Long peptide sequences (up to 100 residues) and difficult sequences are synthesized on this support. The resin shows an increased swelling volume but a significant lower loading. Residues which are sensitive to racemisation during esterification reactions like His and Cys can be attached to the resin without racemisation. Due to the bulkiness of the trityl group, diketopiperazine formation is suppressed which makes this linker ideal for peptides with C-terminal Pro. Cleavage is achieved with 50% AcOH in DCM to give protected peptides. Treatment with 95% TFA liberates free peptides from the resin. The sensitivity towards TFA is comparable to the 2-CT linker