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Fmoc-Asp(OtBu)-OH

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Fmoc-Asp(OtBu)-OH Basic information

Product Name:
Fmoc-Asp(OtBu)-OH
Synonyms:
  • Fmoc-(tBu)Asp-OH
  • cas:71989-14-5
  • Fmoc-L-aspartic acid β-tert-butyl ester≥ 99.7% (HPLC, Chiral purity)
  • N-ALPHA-(9-FLUORENYLMETHOXYCARBONYL)-L-ASPARTIC ACID BETA-T-BUTYL ESTER
  • N-ALPHA-(9-FLUORENYLMETHYLOXYCARBONYL)-L-ASPARTIC ACID BETA-TERT-BUTYL ESTER
  • N-ALPHA-(9-FLUORENYLMETHYLOXYCARBONYL)-L-ASPARTIC ACID BETA-T-BUTYL ESTER
  • N-9-FLUORENYLMETHYLOXYCARBONYL-L-ASPARTIC ACID BETA-T-BUTYL ESTER
  • N-9-FLUORENYLMETHYLOXYCARBONYL-L-ASPARTIC ACID BETA-TERT-BUTYL ESTER
CAS:
71989-14-5
MF:
C23H25NO6
MW:
411.45
EINECS:
276-251-7
Product Categories:
  • Amino Acids
  • Aspartic acid [Asp, D]
  • PROTECTED AMINO ACID & PEPTIDES
  • Fmoc-Amino Acids and Derivatives
  • Amino Acids (N-Protected)
  • Biochemistry
  • Fmoc-Amino Acids
  • Fmoc-Amino acid series
Mol File:
71989-14-5.mol
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Fmoc-Asp(OtBu)-OH Chemical Properties

Melting point:
148-150 °C (dec.)
Boiling point:
530.45°C (rough estimate)
alpha 
-25 º (c=1,DMF 24 ºC)
Density 
1.2498 (rough estimate)
refractive index 
-25 ° (C=1, DMF)
storage temp. 
2-8°C
solubility 
Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.
pka
3.57±0.23(Predicted)
form 
powder to crystal
color 
White to Almost white
optical activity
[α]20/D 24±2°, c = 1% in DMF
Water Solubility 
Slightly soluble in water.
BRN 
3635671
InChIKey
FODJWPHPWBKDON-IBGZPJMESA-N
CAS DataBase Reference
71989-14-5(CAS DataBase Reference)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
24/25-36/37/39-27-26
WGK Germany 
3
HazardClass 
IRRITANT
HS Code 
29242990

MSDS

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Fmoc-Asp(OtBu)-OH Usage And Synthesis

Chemical Properties

Fmoc-Asp(OtBu)-OH is a protected form of L-aspartic acid. It is a white to light yellow crystal powder. The molecule contains ester groups and amino groups, making it prone to polymerization and unstable over time. Therefore, it is not recommended to store it for extended periods.

Uses

L-Aspartic acid is a nonessential amino acid that is used to biosynthesize other amino acids within the human body.

Preparation

Fmoc-Asp(OtBu)-OH was prepared by substitution reaction with 9-fluorenylmethyl chloroformate from L-aspartic acid 4-tert-butyl ester.

General Description

The product number for this product was previously 04-12-1013.

To obtain a certificate of analysis (CoA) of a lot that begins with the letter “A”, please select the option in the right hand menu “Request a COA for Lot#s starting with A”.

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