Fmoc-Cys(StBu)-OH

Modify Date: 2025-08-25 23:41:55

Fmoc-Cys(StBu)-OH Structure
Fmoc-Cys(StBu)-OH structure
Common Name Fmoc-Cys(StBu)-OH
CAS Number 73724-43-3 Molecular Weight 431.568
Density 1.3±0.1 g/cm3 Boiling Point 623.0±55.0 °C at 760 mmHg
Molecular Formula C22H25NO4S2 Melting Point 73-77ºC
MSDS USA Flash Point 330.6±31.5 °C

 Use of Fmoc-Cys(StBu)-OH


N-(((9H-Fluoren-9-yl)methoxy)carbonyl)-S-(tert-butylthio)-L-cysteine is a cysteine derivative[1].

 Names

Name (2R)-3-(tert-butyldisulfanyl)-2-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acid
Synonym More Synonyms

 Fmoc-Cys(StBu)-OH Biological Activity

Description N-(((9H-Fluoren-9-yl)methoxy)carbonyl)-S-(tert-butylthio)-L-cysteine is a cysteine derivative[1].
Related Catalog
In Vitro Amino acids and amino acid derivatives have been commercially used as ergogenic supplements. They influence the secretion of anabolic hormones, supply of fuel during exercise, mental performance during stress related tasks and prevent exercise induced muscle damage. They are recognized to be beneficial as ergogenic dietary substances[1].
References

[1]. Luckose F, et al. Effects of amino acid derivatives on physical, mental, and physiological activities. Crit Rev Food Sci Nutr. 2015;55(13):1793-807.

 Chemical & Physical Properties

Density 1.3±0.1 g/cm3
Boiling Point 623.0±55.0 °C at 760 mmHg
Melting Point 73-77ºC
Molecular Formula C22H25NO4S2
Molecular Weight 431.568
Flash Point 330.6±31.5 °C
Exact Mass 431.122498
PSA 126.23000
LogP 6.95
Vapour Pressure 0.0±1.9 mmHg at 25°C
Index of Refraction 1.621
Storage condition 2-8°C

 Safety Information

Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes Xi
Risk Phrases 22-24/25
Safety Phrases 22-24/25
RIDADR NONH for all modes of transport
WGK Germany 3

 Synthetic Route

~99%

Fmoc-Cys(StBu)-OH Structure

Fmoc-Cys(StBu)-OH

CAS#:73724-43-3

Literature: Gormer, Kristina; Waldmann, Herbert; Triola, Gemma Journal of Organic Chemistry, 2010 , vol. 75, # 5 p. 1811 - 1813

~81%

Fmoc-Cys(StBu)-OH Structure

Fmoc-Cys(StBu)-OH

CAS#:73724-43-3

Literature: 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

 Synonyms

Fmoc-Cys(S-t-Bu)-OH
Fmoc-Cys(tButhio)-OH
MFCD00042617
Nalpha-Fmoc-S-tert-butylthio-L-cysteine
EINECS 277-574-6
N-Fmoc-S-tert-butylthiol-L-cysteine
(R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(tert-butyldisulfanyl)propanoic acid
L-Alanine, 3-[(1,1-dimethylethyl)dithio]-N-[(9H-fluoren-9-ylmethoxy)carbonyl]-
Fmoc-L-Cys(StBu)-OH
N-[(9H-Fluoren-9-ylmethoxy)carbonyl]-3-[(2-methyl-2-propanyl)disulfanyl]-L-alanine
Fmoc-Cys(StBu)-OH
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