E45260
Woodward′s reagent K
95%
Synonym(s):
2-Ethyl-5-phenylisoxazolium-3′-sulfonate, NEPIS
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About This Item
Empirical Formula (Hill Notation):
C11H11NO4S
CAS Number:
Molecular Weight:
253.27
UNSPSC Code:
12352005
NACRES:
NA.22
PubChem Substance ID:
EC Number:
223-988-7
Beilstein/REAXYS Number:
4149224
MDL number:
InChI
1S/C11H11NO4S/c1-2-12-7-6-11(16-12)9-4-3-5-10(8-9)17(13,14)15/h3-8H,2H2,1H3
InChI key
MWOOKDULMBMMPN-UHFFFAOYSA-N
SMILES string
CC[n+]1ccc(o1)-c2cccc(c2)S([O-])(=O)=O
assay
95%
reaction suitability
reaction type: Coupling Reactions
mp
220 °C (dec.) (lit.)
application(s)
peptide synthesis
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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Hans A Kosters et al.
Analytical chemistry, 75(10), 2512-2516 (2003-08-16)
A number of relevant properties of Woodward's reagent K have been determined, such as the stability of the reactant and the optimal reaction conditions of the reactant with protein carboxylates. A Woodward's reagent K stock solution was stable at 4
C T Chang et al.
Biochemistry and molecular biology international, 45(2), 371-380 (1998-07-25)
beta-N-Acetylhexosaminidase was purified from the extract of cabbage by sequential steps of ammonium sulfate fractionation, chromatofocusing, DEAE-Sepharose CL-6B ion exchange chromatography and Sephacryl S-200 HR gel filtration. By these steps, the purity of the enzyme increased by 256 fold with
Soumya SinhaRoy et al.
Molecular and cellular biochemistry, 271(1-2), 167-176 (2005-05-11)
We had previously shown that creatine exerted a protective effect against inhibition of cardiac mitochondrial respiration by methylglyoxal (SinhaRoy S, Biswas S, Ray M, Ray S. Biochem J 372: 661-669,2003). In the present study, we have investigated the mechanism of
R N Puri et al.
Analytical biochemistry, 240(2), 251-261 (1996-09-05)
The chemical reaction of N-ethyl-5-phenylisooxazolium-3'-sulfonate (Woodward's Reagent-K, WR-K) with a carboxyl group yields an enol ester that cannot be reduced by sodium borohydride in an aqueous solution, while other nucleophiles such as sulfhydryl, hydroxyl, amino, and imidazole groups, react with
Paulina Nawłoka et al.
Acta biochimica Polonica, 50(2), 567-572 (2003-07-02)
Effects of several chemical probes selectively modifying various amino-acid residues on the activity of UDP-glucose : solasodine glucosyltransferase from eggplant leaves was studied. It was shown that diethylpyrocarbonate (DEPC), a specific modifier of histidine residues, was strongly inhibitory. However, in
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