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2-Ethyl-5-phenylisoxazolium-3'-sulfonate

Product Name
2-Ethyl-5-phenylisoxazolium-3'-sulfonate
CAS No.
4156-16-5
Chemical Name
2-Ethyl-5-phenylisoxazolium-3'-sulfonate
Synonyms
NEPIS;WOODWARDS REAGENT K;WOODWARD'S REAGENT K;NEPISWOODWARD'S REAG;Woodward's Reagent K;Woodward's reagent K 95%;N-ETHYL-5-PHENYLISOXAZOLIUM-3'-SULFONATE;2-Ethyl-5-phenylisooxazoliuM-3-sulfonate;3-(2-ETHYL-5-ISOXAZOLIO)BENZENESULFONATE;2-ETHYL-5-PHENYLISOXAZOLIUM-3'-SULFONATE
CBNumber
CB2353032
Molecular Formula
C11H11NO4S
Formula Weight
253.27
MOL File
4156-16-5.mol
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2-Ethyl-5-phenylisoxazolium-3'-sulfonate Property

Melting point:
216-219 °C (dec.)
Density 
1.3854 (rough estimate)
refractive index 
1.4790 (estimate)
storage temp. 
Store at RT.
Merck 
10050
BRN 
4149224
CAS DataBase Reference
4156-16-5(CAS DataBase Reference)
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Safety

Hazard Codes 
Xn
Risk Statements 
22
WGK Germany 
3
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P330Rinse mouth.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
E45260
Product name
Woodward’s reagent K
Purity
95%
Packaging
1g
Price
$354
Updated
2023/06/20
American Custom Chemicals Corporation
Product number
CHM0009608
Product name
3-(2-ETHYL-5-ISOXAZOLIO)BENZENESULFONATE
Purity
95.00%
Packaging
10G
Price
$1431.05
Updated
2021/12/16
AK Scientific
Product number
V1143
Product name
2-Ethyl-5-phenylisoxazolium-3'-sulfonate
Packaging
1g
Price
$207
Updated
2021/12/16
Labseeker
Product number
SC-90975
Product name
2-Ethyl-5-phenylisoxazolium-3'-sulfonate
Purity
95
Packaging
50g
Price
$5333
Updated
2021/12/16
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2-Ethyl-5-phenylisoxazolium-3'-sulfonate Chemical Properties,Usage,Production

Chemical Properties

white to off-white crystalline powder

Uses

Peptide-bond former.

Purification Methods

Crystallise the reagent from diethyl ether or ethyl acetate/pet ether. [Lamas et al. J Am Chem Soc 108 5543 1986.] It is best purified by dissolving in excess of aqueous N HCl and precipitating with Me2CO to give a white fluffy solid. [Woodward et al. Tetrahedron 22 Suppl 8 321 1966, Fieser & Fieser Reagents for Organic Synthesis 1 385, 2 198.]

2-Ethyl-5-phenylisoxazolium-3'-sulfonate Preparation Products And Raw materials

Raw materials

Preparation Products

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2-Ethyl-5-phenylisoxazolium-3'-sulfonate Suppliers

China 54 Germany 2 India 1 Switzerland 1 Ukraine 1 United Kingdom 5 United States 12 Global 76
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View Lastest Price from 2-Ethyl-5-phenylisoxazolium-3'-sulfonate manufacturers

Career Henan Chemical Co
Product
2-Ethyl-5-phenylisoxazolium-3'-sulfonate 4156-16-5
Price
US $1.00/g
Min. Order
1g
Purity
99.0%
Supply Ability
100kg
Release date
2020-01-09

4156-16-5, 2-Ethyl-5-phenylisoxazolium-3'-sulfonateRelated Search:

Ethanol Ethylparaben Ethyl cyanoacetate Ethyl pyruvate Ethyl formate Sulfisoxazole ISOXADIFEN-ETHYL Sulfamethoxazole Isoxazole Ethyl acrylate Ethyl acetate Sulfonates Lignin Sulfonate 5-Methylisoxazole 5-PHENYLISOXAZOLE 2-Ethyl-5-phenylisoxazolium-3'-sulfonate 2-ETHYL-5-PHENYLISOXAZOLIUM-3'-SULFONATE = N-ETHYL-5-PHENYLISOXAZOLIUM-3'-SULFONATE

  • NEPIS
  • N-ETHYL-5-PHENYLISOXAZOLIUM-3'-SULFONATE
  • WOODWARDS REAGENT K
  • WOODWARD'S REAGENT K
  • 2-ETHYL-5-PHENYLISOXAZOLIUM-3'-SULPHONEATE
  • Isoxazolium, 2-ethyl-5-(3-sulfophenyl)-, inner salt
  • NEPIS 2-ETHYL-5-PHENYLISOXAZOLIUM-3''-SULFONATE
  • 3-(2-ETHYL-5-ISOXAZOLIO)BENZENESULFONATE 99+%
  • 3-(2-Ethyl-5-isoxazolio)benzenesulphonate~NEPIS~Woodwards
  • 2-Ethyl-5-phenylisoxazolium-3μ-sulfonate, NEPIS
  • 5-(3-Sulfonatophenyl)-2-ethylisoxazol-2-ium
  • N-Ethyl-5-phenylisoxazolium-3'-sulfonate,95%
  • 2-Ethyl-5-phenylisooxazoliuM-3-sulfonate
  • NEPISWOODWARD'S REAG
  • Woodward's reagent K 95%
  • 3-(2-ETHYL-5-ISOXAZOLIO)BENZENESULFONATE
  • 2-ETHYL-5-PHENYLISOXAZOLIUM-3'-SULFONATE
  • 2-ETHYL-5-PHENYLISOXAZOLIUM-3'-SULPHONATE
  • 3-(2-Ethyl-2H-isoxazol-1-ium-5-yl)benzenesulfonate
  • Woodward's Reagent K
  • 4156-16-5
  • C11H12NO4S
  • Coupling
  • Others
  • Synthetic Reagents
  • Peptide Synthesis
  • Coupling Reactions (Peptide Synthesis)
  • Condensation & Active Esterification
  • Biochemistry
  • Condensation & Active Esterification
  • Coupling Reactions (Peptide Synthesis)
  • Peptide Synthesis
  • Synthetic Organic Chemistry