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Home/Compounds/Pharmaceutical Intermediate/Boc-S-Benzyl-L-cysteine
C15H21NO4S
311.4 g/mol
Pharmaceutical Intermediate

L-Cysteine, N-[(1,1-dimethylethoxy)carbonyl]-S-(phenylmethyl)-

CAS5068-28-0
Category
Pharmaceutical Intermediate
Compound Class
Peptide
Primary Use
Pharmaceutical Intermediate

This compound is a protected amino acid derivative used in peptide synthesis. It features a tert-butoxycarbonyl (Boc) protecting group on the amino group and a benzyl group on the cysteine side chain, making it suitable for solid-phase peptide assembly.

Peptide synthesis intermediateProtected amino acid for research and development

Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.

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Related Compounds

SimilarStructure SimilarSimilarity 0.81

Boc-S-(4-methylbenzyl)-L-cysteine

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Z-TYR(TBU)-OME

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3-Cyano-6-isopropylchromone

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Methyl 3-methoxy-4-nitrobenzoate

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Customs Tariff Classification

The international HS code for L-Cysteine, N-[(1,1-dimethylethoxy)carbonyl]-S-(phenylmethyl)- (CAS 5068-28-0) is 2930.90.

HS code (international, 6-digit)

2930.90

EU CN code (8-digit)

2930 90 16

Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.

Identifiers
IUPAC Name

(2R)-3-benzylsulfanyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]propanoic acid

InChIKey

IFVORPLRHYROAA-LBPRGKRZSA-N

SMILES

CC(C)(C)OC(=O)N[C@@H](CSCC1=CC=CC=C1)C(=O)O

Synonyms (20)
  • Boc-(S)-benzyl-D-Cys
  • Boc-Cys(Bzl)-OH
  • Boc-Cys(Bzl)-OH, >=99.0% (T)
  • Boc-S-benzyl-L-cysteine
  • N-Boc-S-benzyl-L-cysteine

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