Aloc-D-Ala-Phe-Lys(Aloc)-PAB-PNP

Fmoc-Ala-Ala-Asn-PAB-PNP

Bis(2,5-dioxopyrrolidin-1-yl) 4,4-disulfanediyldibutanoate

Mal-PEG2-NHS

NHS-PEG4-azide

THP-SS-Alcohol

Bis-PEG5-NHS ester