C23H25NO6
411.4 g/mol
Pharmaceutical IntermediateWarning
4-tert-Butyl hydrogen N-((9H-fluoren-9-ylmethoxy)carbonyl)-L-aspartate
CAS71989-14-5EC276-251-7
Category
Pharmaceutical Intermediate
Compound Class
Peptide
Primary Use
Pharmaceutical Intermediate
This compound is a protected amino acid derivative used primarily as a building block in peptide synthesis. It features a fluorenylmethoxycarbonyl (Fmoc) protecting group and tert-butyl ester moieties, which allow selective deprotection during solid-phase peptide assembly.
Fmoc-based solid-phase peptide synthesis (SPPS)Research reagent for peptide chain elongation
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 0.73
Fmoc-O-tert-Butyl-L-serine
CAS71989-33-8
pharmaceutical intermediate
ReferenceSame Category
N-Fmoc-L-Asparagine
CAS71989-16-7
pharmaceutical intermediate
ReferenceSame Category
Fmoc-L-glutamic acid 5-tert-butyl ester
CAS71989-18-9
pharmaceutical intermediate
ReferenceSame Category
N-Fmoc-N'-Boc-L-Lysine
CAS71989-26-9
pharmaceutical intermediate
ReferenceSame Category
Fmoc-L-Methionine
CAS71989-28-1
pharmaceutical intermediate
Referencestereoisomer of
Fmoc-D-Aspartic acid beta-tert-butyl ester
CAS112883-39-3
pharmaceutical intermediate
Related Reading
Safety Reference
Warning
H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 4-tert-Butyl hydrogen N-((9H-fluoren-9-ylmethoxy)carbonyl)-L-aspartate (CAS 71989-14-5) 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
2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-[(2-methylpropan-2-yl)oxy]-4-oxobutanoic acid
InChIKey
FODJWPHPWBKDON-UHFFFAOYSA-N
SMILES
CC(C)(C)OC(=O)CC(C(=O)O)NC(=O)OCC1C2=CC=CC=C2C3=CC=CC=C13
Synonyms (9)
- Fmoc-DL-Asp(Otbu)-OH
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