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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
Molecular Weight:
253.27
MDL Number:
MFCD00012128
MOL File:
4156-16-5.mol
MSDS File:
SDS
Last updated:2023-05-04 15:14:04

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

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)
FDA UNII 3BN309R76H

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H302
Precautionary statements  P264-P270-P301+P312-P330-P501
Hazard Codes  Xn
Risk Statements  22
WGK Germany  3

2-Ethyl-5-phenylisoxazolium-3'-sulfonate price More Price(4)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich E45260 Woodward’s reagent K 95% 4156-16-5 1g $354 2023-06-20 Buy
American Custom Chemicals Corporation CHM0009608 3-(2-ETHYL-5-ISOXAZOLIO)BENZENESULFONATE 95.00% 4156-16-5 10G $1431.05 2021-12-16 Buy
AK Scientific V1143 2-Ethyl-5-phenylisoxazolium-3'-sulfonate 4156-16-5 1g $207 2021-12-16 Buy
Labseeker SC-90975 2-Ethyl-5-phenylisoxazolium-3'-sulfonate 95 4156-16-5 50g $5333 2021-12-16 Buy
Product number Packaging Price Buy
E45260 1g $354 Buy
CHM0009608 10G $1431.05 Buy
V1143 1g $207 Buy
SC-90975 50g $5333 Buy

2-Ethyl-5-phenylisoxazolium-3'-sulfonate Chemical Properties,Uses,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

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

Global( 76)Suppliers
Supplier Tel Email Country ProdList Advantage
CONIER CHEM AND PHARMA LIMITED
+8618523575427 sales@conier.com China 49390 58
career henan chemical co
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Hefei TNJ Chemical Industry Co.,Ltd.
0551-65418671 sales@tnjchem.com China 34572 58
Dayang Chem (Hangzhou) Co.,Ltd.
571-88938639 +8617705817739 info@dycnchem.com CHINA 52867 58
GIHI CHEMICALS CO.,LIMITED
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Shanghai Acmec Biochemical Technology Co., Ltd.
+undefined18621343501 product@acmec-e.com China 33349 58
Aladdin Scientific
+1-833-552-7181 sales@aladdinsci.com United States 52927 58
Amadis Chemical Company Limited
571-89925085 sales@amadischem.com China 131981 58
Mainchem Co., Ltd. +86-0592-6210733 sale@mainchem.com China 32360 55
J & K SCIENTIFIC LTD. 010-82848833 400-666-7788 jkinfo@jkchemical.com China 96815 76

View Lastest Price from 2-Ethyl-5-phenylisoxazolium-3'-sulfonate manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
2-Ethyl-5-phenylisoxazolium-3'-sulfonate pictures 2020-01-10 2-Ethyl-5-phenylisoxazolium-3'-sulfonate
4156-16-5
US $1.00 / g 1g 99.0% 100kg Career Henan Chemical Co
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