| Xaa: Gly, Ala, Ser, Pro, Val, Thr, Leu, Asp, Gln, Glu, His, Phe, Arg, Tyr | |
| Stage | Fmoc-compound |
| 1 | Fmoc-mini-PEG3-OH |
| 2 | Fmoc-Xaa-OH |
| 3 | Fmoc-mini-PEG3-OH |
| 4 | Fmoc-mini-PEG3-OH |
| 5 | Iminobiotin |
| Xaa: Cys, Ile, Asn, Lys, Met, Trp | |
| Stage | Fmoc-compound |
| 1 | Fmoc-mini-PEG3-OH |
| 2 | Fmoc-Xaa-OH |
| 3 | Fmoc-D-Ser(tBu)-OH |
| 4 | Fmoc-mini-PEG3-OH |
| 5 | Fmoc-mini-PEG3-OH |
| 6 | Iminobiotin |