8.52037 EMD Millipore


Fmoc-Asp-OtBu Novabiochem®. CAS 129460-09-9, molar mass 411.45 g/mol., Novabiochem®

Synonym: N-α-Fmoc-L-aspartic acid α-t.-butyl ester

  • CAS Number 129460-09-9

  • Linear Formula C₂₃H₂₅NO₆

  • Molecular Weight 411.45 g/mol



Related Categories Amino Acids & Derivatives, Aspartic Acid, Chemical Biology, Chemical Synthesis, Peptide Chemistry More...
brand family   Novabiochem
packaging   1 g in Glass bottle (8520370001)
  5 g in Glass bottle (8520370005)
mp   90 - 98 °C
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Colour (visual): white to slight yellow to beige
  Appearance of substance (visual): powder
  Identity (IR): passes test
  Enantiomeric purity: ≥ 99.0 % (a/a)
  Purity (TLC(011A)): ≥ 98 %
  Purity (TLC(0811)): ≥ 98 %
  Assay (HPLC, area%): ≥ 98.0 % (a/a)
  Solubility (1 mmole in 2 ml DMF): clearly soluble
  Assay (acidimetric): ≥ 90.0 %
  Water (K. F.): ≤ 1.00 %
  For TLC-Systems see our General Catalog


Background information

Selectively protected building block for library synthesis or the preparation of β-aspartyl peptides. After condensation of the side-chain carboxy with an appropriate amine or alcohol, the α-amino and carboxy functions can be selectively unmasked with 20% piperidine in DMF and 50% TFA in DCM respectively, facilitating the synthesis of branched esters and amides, and lactams and lactones containing the aspartyl unit.

The product number for this product was previously 04-12-1080.

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".

Price and Availability

Ask us for bulk and customization needs

My Chemicals
Safety & Documentation

Safety Information

HS Code 
2924 29 70
Storage class 
10 - 13 Other liquids and solids
WGK 2 water endangering
Protocols & Articles
Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?