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N(alpha)-Fluorenylmethyloxycarbonyl-S-tert-butylcysteine

HCID 100111
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Basic information

CAS
67436-13-9
Standard SMILES
CC(C)(C)SCC(NC(=O)OCC1c2ccccc2-c2ccccc21)C(=O)O
InChIKey
IXAYZHCPEYTWHW-UHFFFAOYSA-N
Molecular formula
C22H25NO4S
Average molar mass
399.5 g/mol
Monoisotopic mass
399.15042945

Overview

side chain protected amino acid; structure given in first source

Names & identifiers

Preferred name
N(alpha)-Fluorenylmethyloxycarbonyl-S-tert-butylcysteine
IUPAC
3-tert-butylsulfanyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acid
English name
Fmoc-Cys(tBu)-OH
Molecular formula
C22H25NO4S
Molecular weight
399.51

Names & synonyms

Fmoc-S-tert-butyl-cysNSC 334299L-Cysteine, S-(1,1-dimethylethyl)-N-((9H-fluoren-9-ylmethoxy)carbonyl)-N(alpha)-Fluorenylmethyloxycarbonyl-S-tert-butylcysteineRefChem:16083267436-13-9Fmoc-S-tert-butyl-L-cysteine3-tert-butylsulfanyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acidFmoc-S-t-butyl-D-cysteineNSC334299Fmoc-S-t-butyl-L-cysteineSCHEMBL1491458
Show more names
FMoc-Cys(tBu)FMOC-L-CYS(TBU)-OHFMOC-CYS(TBU)-OHFMOC-CYS(BUT)-OHFMOC-L-CYS(T-BU)FMOC-CYSTEINE(TBU)-OHFMOC-(S)-T-BUTYL-L-CYSFMOC-CYS(TBU)-OH, 98+%FMOC-(S)-TERT-BUTYL-L-CYS
AKOS024374939N(alpha)-fmoc-S-tert-butyl-L-cysteineNSC-334299PD196645DB-042055ST51015002Fmoc-S-t-butyl-L-cysteine;Fmoc-Cys(tBu)-OH3-(tert-butylthio)-2-[(fluoren-9-ylmethoxy)carbonylamino]propanoic acid

Properties

Computed structural properties

XLogP
4.3
Topological polar surface area
101 Ų
Hydrogen bond donors
2
Hydrogen bond acceptors
5
Rotatable bonds
8
Heavy atoms
28
Formal charge
0
Complexity
539

Physicochemical properties

Melting point
136 to · 136.0 to 140.0 °C
Boiling point
603.4 · 603.4±55.0 °C(Predicted)
Density
1.237 · 1.237±0.06 g/cm3(Predicted)
storage temp.
2 · 2-8°C
Water Solubility
Soluble in water
solubility
Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.
form
Crystalline Powder
pka
3.49 · 3.49±0.10(Predicted)
color
White
BRN
4577031 · 4577031
Major Application
peptide synthesis
InChI
1S/C22H25NO4S/c1-22(2,3)28-13-19(20(24)25)23-21(26)27-12-18-16-10-6-4-8-14(16)15-9-5-7-11-17(15)18/h4-11,18-19H,12-13H2,1-3H3,(H,23,26)(H,24,25)/t19-/m0/s1
InChIKey
IXAYZHCPEYTWHW-IBGZPJMESA-N
SMILES
CC(C)(C)SC[C@H](NC(=O)OCC1c2ccccc2-c3ccccc13)C(O)=O
CAS DataBase Reference

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

GHS classification

GHS Classification · 4 items

Warning

H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]

P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 2 reports by companies from 1 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Hazard information

Hazard Classes and CategoriesAcute Tox. 4 (100%)

Safety data

PPE
Eyeshields, Gloves, type N95 (US)
wgk
3
hs_code
2930 90 16
safety_code
22-24/25
hazard_class
IRRITANT
Storage Class
11 - Combustible Solids

Chemistry & industry

Applications

UsesFmoc-Cys(tBu)-OH, is an amino acid building block used in peptide synthesis. With a growing peptide drug market the fast, reliable synthesis of peptides is of great importance.

Upstream & downstream products

Upstream raw materials

Fmoc-L-Cysteine(Fmoc-Cys-OH)2S-tert-Butyl-L-cysteine hydrochloridetert-ButanolFmoc-OSu9-Fluorenylmethyl chloroformate

Related reactions

1 records
New reaction record
HRID 1120257 reaction equation
HRID 1120257As reactantTraining data from https://doi.org/10.1039/C8SC04228D (7/10)

Compound notes

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Database identifiers

CAS
67436-13-9
PubChem CID
100111
EC Number
164-208-4
67436 · 67436-13-9(CAS DataBase Reference)
UNSPSC Code
12352209 · 12352209
NACRES
26 · NA.26
PPE
95 · Eyeshields, Gloves, type N95 (US)
Safety Statements
22 · 22-24/25
WGK Germany
3 · 3
HS Code
2930 · 2930 90 16
HazardClass
IRRITANT
Storage Class
11 · 11 - Combustible Solids