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Key Documents

ALD00598

Sigma-Aldrich

CITU

≥95%

Synonym(s):

1,1,3,3-Tetramethyl-2-(4,5,6,7-tetrachloro-1,3-dioxoisoindolin-2-yl)isouronium
hexafluorophosphate(V)

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About This Item

Empirical Formula (Hill Notation):
C13H12Cl4F6N3O3P
CAS Number:
Molecular Weight:
545.03
UNSPSC Code:
12352200
NACRES:
NA.22

Quality Level

Assay

≥95%

form

powder

reaction suitability

reaction type: Coupling Reactions

General description

CITU is an efficient coupling reagent used in solid and solution phase peptide synthesis, particularly, in acylation and decarboxylative cross-coupling reactions. It can also be used as an activator in the Ni-catalyzed Negishi arylation, alkenylation, alkylation, and alkynylation reactions.

Pictograms

Skull and crossbones

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

Acute Tox. 3 Oral

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Articles

Novabiochem® offers a large number of coupling reagents for in situ activation. In situ activating reagents are easy to use, fast reacting – even with sterically hindered amino acids, and their use is generally free of side reactions.

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The Baran Group works with Sigma-Aldrich in providing a portfolio of zinc-based reagents promoting difluoromethylation, trifluoromethylation, trifluoroethylation and isopropylation of aryl and heteroaryl motifs. Baran’s lab has also helped introduce a portable desaturase (Tz0Cl), which promotes the installation of alcohol and amine groups and leaves behind a highly useful tosyl group for further transformations.

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