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Merck

8.52037

Fmoc-Asp-OtBu

Novabiochem®

Synonym(s):

Fmoc-Asp-OtBu, N-α-Fmoc-L-aspartic acid α-t.-butyl ester

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About This Item

Empirical Formula (Hill Notation):
C23H25NO6
CAS Number:
129460-09-9
Molecular Weight:
411.45
MDL number:
MFCD00065631
UNSPSC Code:
12352209
NACRES:
NA.22

Product Name

Fmoc-Asp-OtBu, Novabiochem®

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

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

Quality Level

200

Related Categories

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.

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

Other Notes

Replaces: 04-12-1080

Legal Information

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

Storage Class

11 - Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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