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26908-82-7 Usage

Purification Methods

The most likely impurity is p-toluenesulfonic acid (could be up to 10%). This can be removed by dissolving it in dry Et2O and cooling until the anhydride crystallises out. It decomposes on heating; below ~130o it gives the disulfonic anhydride and above ~130o polymers are formed, but it can be distilled in a vacuum if it is free of acid. It is used for cleaving ethers [Prep, IR, NMR: Karger & Mazur J Org Chem 36 528, Karger & Mazur J Org Chem 36 532 1971]. [Beilstein 11 III 255.]

Check Digit Verification of cas no

The CAS Registry Mumber 26908-82-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,9,0 and 8 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 26908-82:
137 % 10 = 7
So 26908-82-7 is a valid CAS Registry Number.



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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017


1.1 GHS Product identifier

Product name (4-Methylphenyl)sulfonyl acetate

1.2 Other means of identification

Product number -
Other names p-tolylsulfonyl acetate

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:26908-82-7 SDS

26908-82-7Relevant articles and documents

Correlation of the rates of solvolysis of acetic p-toluenesulfonic anhydride (acetyl p-toluenesulfonate) and a comparison with acetyl halides

Kevill, Dennis N.,Ryu, Zoon Ha

, p. 983 - 988 (2014/01/06)

The specific rates of solvolysis of acetyl p-toluenesulfonate have been measured by a rapid-response conductivity technique at temperatures in the temperature range of -10 to -55 °C. For 13 solvents at -39.6 °C, an extended Grunwald-Winstein equation correlation led to sensitivities to changes in solvent nucleophilicity of 0.56 and to changes in solvent ionizing power of 0.61. In 89.1% acetone at -20 °C, the comparison with acetyl bromide solvolysis led to a kOTs/kBr ratio of 1.4. In methanol and methanol-d at -39.6 °C, the solvent deuterium isotope effect k MeOH/kMeOD is 0.99. These results are consistent with an SNl reaction with appreciable nucleophilic solvation or an S N2 reaction with a loose transition state. These two approaches lead to similar structures for the transition state. A solution of the acetyl p-toluenesulfonate was conveniently prepared by the rapid reaction of acetyl chloride with silver p-toluenesulfonate in acetonitrile. Copyright 2013 John Wiley & Sons, Ltd. Correlation of the rates of solvolysis of acetic p-toluenesulfonic anhydride (acetyl p-toluenesulfonate) and a comparison with acetyl halides. Copyright

Syntheses of 1-substituted furan-fused 3-sulfolenes and their Diels-Alder reactions

Suzuki, Takayoshi,Fuchii, Hideyuki,Takayama, Hiroaki

, p. 2699 - 2704 (2007/10/03)

The preparation of 1-substituted 4H,6H-dihydrothienofuran 5,5-dioxides and their intermolecular Diels-Alder reactions with typical dienophiles are described. 1-Acetyl-1d and 1-nitro-furansulfolene 1e were prepared by simple new methods.Acetyl and nitro substituents in the furan moiety did little to diminish its Diels-Alder reactivity relative to the corresponding furans.Furthermore, on reaction with dimethyl fumarate, 1-acetylfuransulfolene 1d acted like the corresponding 3,4-dimethylenefuran.

A novel and versatile route to mixed p-toluenesulphonic carboxylic anhydrides

Kumar, Arvind,Srivastava, Nivedita,Mital, Alka

, p. 606 - 607 (2007/10/02)

A versatile route to the mixed p-toluenesulphonic carboxylic anhydrides (1) via the reaction of tetra-n-butylammonium carboxylate (2) with p-toluenesulphonyl chloride in a neutral medium is described.Some of the synthetic applications of the proposed method are described.

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