C16H21NO6
323.34 g/mol
Pharmaceutical IntermediateWarning
4-tert-Butyl hydrogen N-((phenylmethoxy)carbonyl)-L-aspartate
CAS5545-52-8EC226-912-0
Category
Pharmaceutical Intermediate
Compound Class
Peptide
Primary Use
Pharmaceutical Intermediate
This compound is a protected aspartic acid derivative used in peptide synthesis. It features a tert-butyl ester protecting group on the side chain and a benzyloxycarbonyl (Cbz) protecting group on the amino function, making it suitable for stepwise construction of peptides in research and manufacturing settings.
Peptide synthesis building blockProtected amino acid for solid-phase peptide synthesisResearch reagent for pharmaceutical intermediate production
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
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SimilarStructure SimilarSimilarity 0.81
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ApplicationSame Use
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ReferenceSame Category
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ReferenceSame Category
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ReferenceSame Category
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ReferenceSame Category
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Related Reading
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 4-tert-Butyl hydrogen N-((phenylmethoxy)carbonyl)-L-aspartate (CAS 5545-52-8) is 2924.29.
HS code (international, 6-digit)
2924.29
EU CN code (8-digit)
2924 29 70
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
(2S)-4-[(2-methylpropan-2-yl)oxy]-4-oxo-2-(phenylmethoxycarbonylamino)butanoic acid
InChIKey
HLSLRFBLVZUVIE-LBPRGKRZSA-N
SMILES
CC(C)(C)OC(=O)C[C@@H](C(=O)O)NC(=O)OCC1=CC=CC=C1
Synonyms (23)
- Cbz-Asp(O-t-Bu)
- Cbz-Asp(OBut)-OH
- Cbz-Asp(OtBu)-OH
- DEAZA-AMINOPTERIN
- Z-ASP(OTBU)-OH H2O
- Z-Asp(OtBu)-OH
- Z-Asp(OtBu)-OH, >=98.0% (TLC)
- Z-L-Asp(OtBu)-OH
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