Z-Cys(Bzl)-ONp contains a cysteine amino acid framework bearing a benzyl-protected thiol side chain (Cys(Bzl)) and an N-terminal benzyloxycarbonyl (Z, Cbz) protecting group, with the carboxyl group converted to an ONp ester (p-nitrophenyl ester). The molecule therefore presents a protected amino functionality as part of the carbamate, a benzyl thioether at the side chain sulfur, and an activated p-nitrophenyl ester that can undergo acyl transfer under appropriate conditions while avoiding free carboxyl reactivity. Z-Cys(Bzl)-ONp is employed as an amino acid derivative and peptide-building intermediate to introduce a protected cysteine residue in peptide synthesis workflows and to support coupling strategies that use activated carboxylate esters for stepwise amide bond formation.
CAT No: CP27026
CAS No:3401-37-4
Synonyms/Alias:Z-Cys(Bzl)-ONp;3401-37-4;SCHEMBL11774358;7867AH;ZINC71788208;K-7808;N|A-Z-S-benzyl-L-cysteine4-nitrophenylester;N-[(Benzyloxy)carbonyl]-S-benzyl-L-cysteine4-nitrophenylester
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