8.52037

Fmoc-Asp-OtBu

Novabiochem^®

• Synonym(s): Fmoc-Asp-OtBu, N-α-Fmoc-L-aspartic acid α-t.-butyl ester
• Empirical Formula (Hill Notation): C₂₃H₂₅NO₆
• CAS Number: 129460-09-9
• Molecular Weight: 411.45
• MDL number: MFCD00065631
• UNSPSC Code: 12352209
• NACRES: NA.22

Properties

• Quality Segment: 200
• product line: Novabiochem^®
• assay: ≥90.0% (acidimetric), ≥98% (TLC), ≥98.0% (HPLC)
• form: powder
• reaction suitability: reaction type: Fmoc solid-phase peptide synthesis
• manufacturer/tradename: Novabiochem^®
• mp: 90-98 °C
• application(s): peptide synthesis
• functional group: carboxylic acid
• storage temp.: 2-30°C
• SMILES string: N([C@@H](CC(=O)O)C(=O)OC(C)(C)C)C(=O)OCC1c2c(cccc2)c3c1cccc3
• InChI: 1S/C23H25NO6/c1-23(2,3)30-21(27)19(12-20(25)26)24-22(28)29-13-18-16-10-6-4-8-14(16)15-9-5-7-11-17(15)18/h4-11,18-19H,12-13H2,1-3H3,(H,24,28)(H,25,26)/t19-/m0/s1
• InChI key: VZXQYACYLGRQJU-IBGZPJMESA-N

Description

General description

Selectively protected building block for library synthesis or the preparation of β-aspartyl peptides by Fmoc SPPS. After condensation of the side-chain carboxy with an appropriate amine or alcohol, the β-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.

Associated Protocols and Technical Articles
Cleavage and Deprotection Protocols for Fmoc SPPS

Analysis Note

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 %

To see the solvent systems used for TLC of Novabiochem^® products please click here.

Other Notes

Replaces: 04-12-1080

Legal Information

Novabiochem is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable