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Sigma-Aldrich

Fmoc-Leu-OH

Novabiochem®

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Synonym(s):
Fmoc-Leu-OH, N-α-Fmoc-L-leucine
Empirical Formula (Hill Notation):
C21H23NO4
CAS Number:
35661-60-0
Molecular Weight:
353.41
MDL number:
MFCD00037133
UNSPSC Code:
12352209
EC Index Number:
252-662-7
NACRES:
NA.22

Quality Level

400

product line

Novabiochem®

Assay

≥98% (TLC)
≥98.0% (acidimetric)
≥99.0% (HPLC)

form

powder

reaction suitability

reaction type: Fmoc solid-phase peptide synthesis

manufacturer/tradename

Novabiochem®

mp

145-153 °C

application(s)

peptide synthesis

functional group

Fmoc

storage temp.

2-30°C

InChI

1S/C21H23NO4/c1-13(2)11-19(20(23)24)22-21(25)26-12-18-16-9-5-3-7-14(16)15-8-4-6-10-17(15)18/h3-10,13,18-19H,11-12H2,1-2H3,(H,22,25)(H,23,24)

InChI key

CBPJQFCAFFNICX-UHFFFAOYSA-N

Related Categories

General description

High purity Fmoc-protected amino acid for research and process production of peptides, with very low levels of dipeptide, free-amino acids and acetic acid impurities. Standard building block for introduction of leucine amino-acid residues by Fmoc SPPS

Associated Protocols and Technical Articles
Fmoc-amino acids for Peptide Production
Cleavage and Deprotection Protocols for Fmoc SPPS

Application

  • Fmoc-protection efficiency: Addressing the efficiency and recrystallization needs in the Fmoc-protection process (R Yoshino et al., 2017).
  • Isotopic labeling for NMR: Development of 17O isotopic labeling of N-Formyl-MLF-OH and related building blocks, enhancing NMR spectroscopy applications (M Ha et al., 2021).
  • Perovskite solar cell modification: Investigating the role of Fmoc-Leu-OH in modifying perovskite film to enhance solar cell efficiency (J Song et al., 2022).

Linkage

Replaces: 04-12-1025

Analysis Note

Colour (visual): white to off white
Appearance of substance (visual): powder
Colour index (0,5 M in DMF): ≤ 150 Hazen
Identity (IR): passes test
Enantiomeric purity: ≥ 99.8 % (a/a)
Purity (HPLC): ≥ 99.0 % (a/a)
Fmoc-ß-Ala-OH (HPLC): ≤ 0.1 % (a/a)
Fmoc-ß-Ala-Leu-OH (HPLC): ≤ 0.1 % (a/a)
Fmoc-Leu-Leu-OH (HPLC): ≤ 0.1 % (a/a)
Fmoc-Ile-OH (GC): ≤ 0.1 % (a/a)
Assay free amino acid (GC): ≤ 0.2 %
Purity (TLC(011A)): ≥ 98 %
Purity (TLC(0811)): ≥ 98 %
Solubility (25 mmole in 50 ml DMF): clearly soluble
Assay (acidimetric): ≥ 98.0 %
Water (K. F.): ≤ 2.0 %
Ethyl acetate (HS-GC): ≤ 0.5 %
Acetate (IC): ≤ 0.02 %

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

Legal Information

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

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

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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Yun Song et al.
Cell reports, 30(8), 2699-2711 (2020-02-27)
The transcriptional corepressor complex CoREST is one of seven histone deacetylase complexes that regulate the genome through controlling chromatin acetylation. The CoREST complex is unique in containing both histone demethylase and deacetylase enzymes, LSD1 and HDAC1, held together by the

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