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Boc-Phe(3-F)-OH

Fmoc-D-Cys(Acm)-OH

Fmoc-Cys(Bzl)-Cl

Fmoc-Cys(tBu)-OPfp

Boc-Cys(Trt)-OSu

Boc-Cys(tBu)-OH

H-D-Asp(OBut)-OButl.HCl

H-Asp(OBzl)-OBzl.HCl

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