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95440 Sigma-Aldrich

2-Ethyl-5-phenylisoxazolium-3′-sulfonate

purum, ≥97.0% (T)

Synonym: Woodwards reagent K

  • CAS Number 4156-16-5

  • Empirical Formula (Hill Notation) C11H11NO4S

  • Molecular Weight 253.27

  •  Beilstein Registry Number 4149224

  •  EC Number 223-988-7

  •  MDL number MFCD00012128

  •  PubChem Substance ID 24890154

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Properties

Related Categories Chemical Synthesis, Coupling, Other Synthetic Reagents for Coupling, Synthetic Reagents
InChI Key   MWOOKDULMBMMPN-UHFFFAOYSA-N
grade   purum
assay   ≥97.0% (T)
mp   216-219 °C (dec.)

Description

Other Notes

Modification of carboxylic groups in enzymes; Coupling reagent for peptide synthesis

Same product — same quality — now Sigma-Aldrich brand

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Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
3

Documents

Certificate of Analysis

Protocols & Articles
Peer-Reviewed Papers
15

References

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E45260 Woodward’s reagent K, 95%

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