N-(((9H-Fluoren-9-yl)methoxy)carbonyl)-S-(tert-butylthio)-L-cysteine

Name: N-(((9H-Fluoren-9-yl)methoxy)carbonyl)-S-(tert-butylthio)-L-cysteine
Brand: ChemScene
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CAS No. 73724-43-3
Cat. No. CS-0059648
Molecule weight431.57
Purity≥97%
MDL No.MFCD00042617

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Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
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Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
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N-(((9H-Fluoren-9-yl)methoxy)carbonyl)-S-(tert-butylthio)-L-cysteine|CS-0059648

Structure of 73724-43-3

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General Information

CAS No. 73724-43-3
Cat. No. CS-0059648
Purity ≥97%
MDL No. MFCD00042617
Storage 4°C
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₂₂H₂₅NO₄S₂
Molecular Weight 431.57
Synonym(s) Fmoc-Cys(StBu)-OH
SMILES O=C(O)[C@H](CSSC(C)(C)C)NC(OCC1C2=C(C3=C1C=CC=C3)C=CC=C2)=O

Description

N-(((9H-Fluoren-9-yl)methoxy)carbonyl)-S-(tert-butylthio)-L-cysteine is a protected cysteine derivative featuring a fluorenylmethyl carbamate (Fmoc) group and a sterically shielded tert-butylthio side chain. This combination enables stable incorporation into peptide synthesis, where the Fmoc moiety permits orthogonal deprotection and the thioether group resists oxidation during handling.

Synthesis

Route1
- In-stock
  
  135248-89-4
- 75-66-1
- ~99%
- In-stock
  
  73724-43-3
References
- Gormer, Kristina; Waldmann, Herbert; Triola, Gemma Journal of Organic Chemistry, 2010 , vol. 75, # 5 p. 1811 - 1813
Route2
- 30044-51-0
- 28920-43-6
- ~81%
- In-stock
  
  73724-43-3
References
- Atherton, Eric; Pinori, Masimo; Sheppard, Robert C. Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1985 , p. 2057 - 2064

Safety Information

Download SDS

GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P330-P362+P364-P405-P501

Quality Control

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Computational Chemistry Data

TPSA 75.63
LogP 5.1582
H_Acceptors 5
H_Donors 2
Rotatable_Bonds 7

Other Classifications

Bioactive Molecules Peptides

Building Blocks Functional Group Fmoc

Life Science Amino Acids and their Derivatives Cysteine and derivatives

Chemical Biology Peptide Chemistry Amine Protection

Chemical Biology Peptide Chemistry Amino Acid Derivatives

Key Words

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N-(((9H-Fluoren-9-yl)methoxy)carbonyl)-S-(tert-butylthio)-L-cysteine

CAS No. 73724-43-3

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