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
Beilstein:
4149224
EC Number:
MDL number:
UNSPSC Code:
12352005
PubChem Substance ID:
NACRES:
NA.22
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Assay
95%
reaction suitability
reaction type: Coupling Reactions
mp
220 °C (dec.) (lit.)
application(s)
peptide synthesis
SMILES string
CC[n+]1ccc(o1)-c2cccc(c2)S([O-])(=O)=O
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
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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P Paoli et al.
The Biochemical journal, 328 ( Pt 3), 855-861 (1998-02-07)
The organ common-type (CT) isoenzyme of acylphosphatase is inactivated by Woodward's reagent K (WRK) (N-ethyl-5-phenylisoxazolium-3'-sulphonate) at pH6.0. The inactivation reaction follows apparent pseudo first-order kinetics. The dependence of the reciprocal of the pseudo first-order kinetic constant (kobs) on the reciprocal
P Bustos et al.
Journal of protein chemistry, 15(5), 467-472 (1996-07-01)
The reaction of Woordward's reagent K (WRK) with model amino acids and proteins has been analyzed. Our results indicate that WRK forms 340-nm-absorbing adducts with sulfhydryl- and imidazol-containing compounds, but not with carboxylic acid derivatives, in agreement with Liamas et
W Feng et al.
Molecular membrane biology, 13(2), 85-93 (1996-04-01)
In this work we show that ryanodine binding to junctional sarcoplasmic reticulum (SR) membranes or purified ryanodine receptor (RyR) is inhibited in a time- and concentration-dependent fashion by prior treatment with the carboxyl reagent dicyclohexylcarbodiimide (DCCD). Exposure of the membrane-bound
E Winkler et al.
Biochemistry, 36(1), 148-155 (1997-01-07)
The transport inhibiting nucleotide binding to the uncoupling protein (UCP) has a unique pH dependence and has been postulated to be controlled by the dissociation state of a carboxyl group in UCP with pK 4.5 and, in addition only for
Nelson Carvajal et al.
The protein journal, 23(3), 179-183 (2004-06-18)
Human liver arginase (EC 3.5.3.1) was totally inactivated by incubation with Woodward's reagent K (WRK). The inactivation followed pseudo-first-order kinetics, and the order of the inactivation was close to 1, consistent with reaction of one molecule of WRK with one
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