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Boc-N-Me-Val-OH

Boc-N-Me-Tyr.DCHA

H-Tyr(Bzl)-OMe.HCl

H-Tyr(Bzl)-OBzl.HCl

H-Tyr(tBu)-OtBu.HCl

Cbz-Tyr(tBu)-OH dicyclohexylamine salt

Cbz-Tyr(Bzl)-OH

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