Millipore Sigma Vibrant Logo

852037 Fmoc-Asp-OtBu

Overview

Replacement Information

Key Spec Table

CAS #Hill FormulaMolar Mass
129460-09-9C₂₃H₂₅NO₆411.45 g/mol
Description
Catalogue Number852037
Replaces04-12-1080
Brand Family Novabiochem®
Alternate Names
  • N-α-Fmoc-L-aspartic acid α-t.-butyl ester
Background InformationSelectively 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".
References
Product Information
CAS number129460-09-9
Hill FormulaC₂₃H₂₅NO₆
Molar Mass411.45 g/mol
HS Code2924 29 99
Structure formula ImageStructure formula Image
Quality LevelMQ200
Applications
ApplicationFmoc-Asp-OtBu Novabiochem®. CAS 129460-09-9, molar mass 411.45 g/mol.
Biological Information
Physicochemical Information
Melting Point90 - 98 °C
Dimensions
Materials Information
Toxicological Information
Safety Information according to GHS
Storage class10 - 13 Other liquids and solids
WGKWGK 2 obviously hazardous to water
Safety Information
Product Usage Statements
Storage and Shipping Information
StorageStore below +30°C.
Packaging Information
Transport Information
Supplemental Information
Specifications
Color (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