Tos-Lys(Z)-OH is a protected lysine derivative featuring a lysine side chain bearing a tosyl (Tos) group and an amino-protecting Z (benzyloxycarbonyl, Cbz) group, with the carboxylic acid present as a free acid (-OH). The molecule contains an unprotected carboxyl functional group for acylation chemistry, while the protected α-amino functionality is masked by the Z carbamate to reduce undesired amine reactivity during peptide coupling steps. Tos-Lys(Z)-OH is employed as a protected amino acid building block in peptide synthesis and related derivatization workflows where controlled chemoselectivity of the carboxyl group and temporary suppression of amine reactivity are required.
CAT No: CP27030
CAS No:34235-82-0
Synonyms/Alias:Tos-Lys(Z)-OH;34235-82-0;Nepsilon-Carbobenzoxy-Nalpha-tosyl-L-lysine;SCHEMBL10365919;Nepsilon-Cbz-Nalpha-tosyl-L-lysine;ZINC15721273;N-(Epsilon)-carbobenzoxy-N-(alpha)-tosyl-L-lysine;I14-58308
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