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Home/Compounds/Research Reagent/FMOC-S-trityl-L-cysteine
C37H31NO4S
585.7 g/mol
Research ReagentWarning

Fmoc-L-Cys(Trt)-OH

CAS103213-32-7
Category
Research Reagent
Compound Class
Peptide
Primary Use
Research Compound

Fmoc-L-Cys(Trt)-OH is a research reagent used as a side chain protected amino acid in peptide synthesis. Its structure includes an Fmoc protecting group on the amino terminus and a trityl (Trt) group protecting the cysteine side chain thiol.

side chain protected amino acid for peptide synthesisresearch reagent 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 0.80

N-Fmoc-S-trityl-L-homocysteine

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SimilarStructure SimilarSimilarity 0.78

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ReferenceSame Category

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Referencestereoisomer of

N-Fmoc-S-trityl-D-cysteine

CAS167015-11-4

pharmaceutical intermediate

Referencesame scaffold

Fmoc-S-Trityl-L-penicillamine

CAS201531-88-6

pharmaceutical intermediate

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
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation
Identifiers
IUPAC Name

(2R)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-3-tritylsulfanylpropanoic acid

InChIKey

KLBPUVPNPAJWHZ-UMSFTDKQSA-N

SMILES

C1=CC=C(C=C1)C(C2=CC=CC=C2)(C3=CC=CC=C3)SC[C@@H](C(=O)O)NC(=O)OCC4C5=CC=CC=C5C6=CC=CC=C46

Synonyms (23)
  • FMOC-CYSTEINE(TRT)-OH
  • FMOC-S-trityl-L-cysteine
  • Fmoc-Cyc(Trt)-OH
  • Fmoc-Cys(Trt)
  • Fmoc-Cys(Trt)-OH
  • Fmoc-L-Cys(Trt)-OH
  • Fmoc-S-trityl-cys
  • N-Fmoc-S-trityl-L-cysteine

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