C9H17NO4
203.24 g/mol
Pharmaceutical IntermediateWarning
(4S)-4-AMINO-5-(TERT-BUTOXY)-5-OXOPENTANOIC ACID
CAS45120-30-7EC801-523-4
Category
Pharmaceutical Intermediate
Compound Class
Ester
Primary Use
Pharmaceutical Intermediate
This compound is L-glutamic acid tert-butyl ester, a protected derivative of glutamic acid primarily used in peptide synthesis. It serves as a key building block for the preparation of glutamic acid-containing peptides and other amino acid derivatives in pharmaceutical manufacturing.
Building block in peptide synthesisIntermediate for glutamic acid derivativesResearch reagent in pharmaceutical 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.
Sourcing (4S)-4-AMINO-5-(TERT-BUTOXY)-5-OXOPENTANOIC ACID?
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Related Compounds
StrongSame Parent
L-Glutamic acid 1-tert-Butyl ester hydrochloride
CAS144313-55-3
pharmaceutical intermediate
ReferenceSame Category
Boc-N-methyl-L-valine
CAS45170-31-8
pharmaceutical intermediate
ReferenceSame Category
5-Chloro-2-fluorotoluene
CAS452-66-4
pharmaceutical intermediate
ReferenceSame Category
2-Fluoro-5-aminotoluene
CAS452-69-7
pharmaceutical intermediate
ReferenceSame Category
4-Fluoro-3-methylphenol
CAS452-70-0
pharmaceutical intermediate
Referencestereoisomer of
H-D-Glu-OtBu HCl
CAS200616-62-2
pharmaceutical intermediate
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for (4S)-4-AMINO-5-(TERT-BUTOXY)-5-OXOPENTANOIC ACID (CAS 45120-30-7) is 2922.49.
HS code (international, 6-digit)
2922.49
EU CN code (8-digit)
2922 49 85
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
(4S)-4-amino-5-[(2-methylpropan-2-yl)oxy]-5-oxopentanoic acid
InChIKey
QVAQMUAKTNUNLN-LURJTMIESA-N
SMILES
CC(C)(C)OC(=O)[C@H](CCC(=O)O)N
Synonyms (20)
- 1-tert-Butyl L-glutamate
- 98% (contains <2%H2O)
- Glu-OtBu
- H-Glu-Otbu HCl
- L-Glu-OtBu
- a-tert-Butyl L-glutamate
- glutamic acid t-butyl ester
- h-glu-otbu
Sourcing (4S)-4-AMINO-5-(TERT-BUTOXY)-5-OXOPENTANOIC ACID?
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