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Home/Compounds/Pharmaceutical Intermediate/Fmoc-O-tert-butyl-D-serine
C22H25NO5
383.4 g/mol
Pharmaceutical IntermediateWarning

9-fluorenylmethyloxycarbonyl-D-Ser(t-butyl)-OH

CAS128107-47-1EC810-913-3
Category
Pharmaceutical Intermediate
Compound Class
Peptide
Primary Use
Pharmaceutical Intermediate

This compound is a protected D-serine derivative used as a building block in solid-phase peptide synthesis. The Fmoc group protects the amine, while the tert-butyl group protects the side-chain hydroxyl, enabling selective deprotection during chain assembly.

building block for peptide synthesisprotected amino acid for solid-phase peptide synthesis

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 0.77

Fmoc-Ser(tBu)-Gly-OH

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SimilarStructure SimilarSimilarity 0.75

N-[(9H-Fluoren-9-ylmethoxy)carbonyl]-4-methyl-L-leucine

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SimilarStructure SimilarSimilarity 0.73

Fmoc-D-Aspartic acid beta-tert-butyl ester

CAS112883-39-3

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ApplicationSame Use

(S)-N-Fmoc-2-Thienylalanine

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Fmoc-O-tert-butyl-D-threonine

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ApplicationSame Use

N-Fmoc-S-(4-methoxybenzyl)-L-cysteine

CAS141892-41-3

pharmaceutical intermediate

ApplicationSame Use

Fmoc-D-leucine

CAS114360-54-2

pharmaceutical intermediate

ReferenceSame Category

3-Hydroxyazetidine-1-carboxylic acid benzyl ester

CAS128117-22-6

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Related Reading

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2026 has been a concentrated year for peptide therapeutics. Efficacy reached a new high in late-stage trials, the obesity field moved beyond the incretins to amylin, the oral route reached weight management, and peptide-guided radioligand therapy kept advancing — each point tied to a specific 2025–2026 result.

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Safety Reference

Harmful
Harmful
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Identifiers
IUPAC Name

(2R)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-3-[(2-methylpropan-2-yl)oxy]propanoic acid

InChIKey

REITVGIIZHFVGU-LJQANCHMSA-N

SMILES

CC(C)(C)OC[C@H](C(=O)O)NC(=O)OCC1C2=CC=CC=C2C3=CC=CC=C13

Synonyms (15)
  • Fmoc-D-Ser(Bu-t)-OH
  • Fmoc-D-Ser(tBu)-OH
  • Fmoc-O-tert-butyl-D-serine
  • N-Fmoc-O-tert-butyl-D-Serine
  • O-tert-Butyl-N-Fmoc-L-serine

Sourcing 9-fluorenylmethyloxycarbonyl-D-Ser(t-butyl)-OH?

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