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998-91-4

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998-91-4 Usage

Uses

Ethyl 3-ethoxy-2-butenoate is used as pharmaceutical intermediate.

Check Digit Verification of cas no

The CAS Registry Mumber 998-91-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,9 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 998-91:
(5*9)+(4*9)+(3*8)+(2*9)+(1*1)=124
124 % 10 = 4
So 998-91-4 is a valid CAS Registry Number.
InChI:InChI=1/C8H14O3/c1-4-10-7(3)6-8(9)11-5-2/h6H,4-5H2,1-3H3

998-91-4 Well-known Company Product Price

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  • Alfa Aesar

  • (A11097)  Ethyl 3-ethoxy-2-butenoate, 97%   

  • 998-91-4

  • 5g

  • 315.0CNY

  • Detail
  • Alfa Aesar

  • (A11097)  Ethyl 3-ethoxy-2-butenoate, 97%   

  • 998-91-4

  • 25g

  • 1181.0CNY

  • Detail
  • Alfa Aesar

  • (A11097)  Ethyl 3-ethoxy-2-butenoate, 97%   

  • 998-91-4

  • 100g

  • 3356.0CNY

  • Detail

998-91-4SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 13, 2017

Revision Date: Aug 13, 2017

1.Identification

1.1 GHS Product identifier

Product name ETHYL 3-ETHOXYBUT-2-ENOATE

1.2 Other means of identification

Product number -
Other names Ethyl 3-ethoxycrotonate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:998-91-4 SDS

998-91-4Relevant articles and documents

-

Michael,Carlson

, p. 161,163, 164 (1935)

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Five Roads That Converge at the Cyclic Peroxy-Criegee Intermediates: BF3-Catalyzed Synthesis of β-Hydroperoxy-β-peroxylactones

Vil, Vera A.,Gomes, Gabriel Dos Passos,Ekimova, Maria V.,Lyssenko, Konstantin A.,Syroeshkin, Mikhail A.,Nikishin, Gennady I.,Alabugin, Igor V.,Terent'Ev, Alexander O.

, p. 13427 - 13445 (2018/11/02)

We have discovered synthetic access to β-hydroperoxy-β-peroxylactones via BF3-catalyzed cyclizations of a variety of acyclic precursors, β-ketoesters and their silyl enol ethers, alkyl enol ethers, enol acetates, and cyclic acetals, with H2O2. Strikingly, independent of the choice of starting material, these reactions converge at the same β-hydroperoxy-β-peroxylactone products, i.e., the peroxy analogues of the previously elusive cyclic Criegee intermediate of the Baeyer-Villiger reaction. Computed thermodynamic parameters for the formation of the β-hydroperoxy-β-peroxylactones from silyl enol ethers, enol acetates, and cyclic acetals confirm that the β-peroxylactones indeed correspond to a deep energy minimum that connects a variety of the interconverting oxygen-rich species at this combined potential energy surface. The target β-hydroperoxy-β-peroxylactones were synthesized from β-ketoesters, and their silyl enol ethers, alkyl enol ethers, enol acetates, and cyclic acetals were obtained in 30-96% yields. These reactions proceed under mild conditions and open synthetic access to a broad selection of β-hydroperoxy-β-peroxylactones that are formed selectively even in those cases when alternative oxidation pathways can be expected. These β-peroxylactones are stable and can be useful for further synthetic transformations.

Introduction of a carboxyl group through an acetal as a new route to carboxylic acid derivatives of sugars

Carbonnel, Sylvie,Fayet, Catherine,Gelas, Jacques

, p. 63 - 73 (2007/10/03)

A new class of carboxylic acid derivatives of sugars is described. Acetalation of mono- and disaccharides with a functionalized vinylic ether or a diethoxybutanoate afforded mono- and diacetals bearing an ester group. Their saponification led to the corresponding carboxylic acid acetals in which the length of the acetal side chain can be modulated. Copyright (C) 1999 Elsevier Science Ltd.

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