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4001-61-0 Usage


2,5-DIMETHYLTHIOPHENOL is a clear light yellow liquid that is an organic compound with the molecular formula C8H10S. It is characterized by the presence of a thiophene ring with two methyl groups at the 2nd and 5th positions.


Used in Chemical Synthesis:
2,5-DIMETHYLTHIOPHENOL is used as a key intermediate in the synthesis of various organic compounds for different applications. It plays a crucial role in the production of advanced materials and chemicals.
Used in Polymer Synthesis:
2,5-DIMETHYLTHIOPHENOL is used as a monomer in the synthesis of poly(2-dodecanoylsulfanyl-p-phenylenevinylene), contributing to the development of novel polymers with specific properties.
Used in Pharmaceutical Industry:
2,5-DIMETHYLTHIOPHENOL is used as a building block in the synthesis of various pharmaceutical compounds, such as 1,1,2-trichloro-4-(2,5-dimethylphenylthio)-1-buten-3-yne; 1,1,2,4-tetrachloro-4-(2,5-dimethylphenylthio)-1,3-butadiene, and 1,1,2-trichloro-4,4-bis(2,5-dimethylphenylthio)-1,3-butadiene. These compounds may have potential applications in the development of new drugs and therapeutic agents.
Used in Chemical Research:
2,5-DIMETHYLTHIOPHENOL is utilized as a research compound in various scientific studies, particularly in the field of organic chemistry, to explore its properties and potential applications in the synthesis of new molecules and materials.

Check Digit Verification of cas no

The CAS Registry Mumber 4001-61-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,0,0 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4001-61:
40 % 10 = 0
So 4001-61-0 is a valid CAS Registry Number.

4001-61-0 Well-known Company Product Price

  • Brand
  • (Code)Product description
  • CAS number
  • Packaging
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  • Detail
  • Alfa Aesar

  • (B24164)  2,5-Dimethylthiophenol, 98%   

  • 4001-61-0

  • 5g

  • 729.0CNY

  • Detail
  • Alfa Aesar

  • (B24164)  2,5-Dimethylthiophenol, 98%   

  • 4001-61-0

  • 25g

  • 2161.0CNY

  • Detail
  • Alfa Aesar

  • (B24164)  2,5-Dimethylthiophenol, 98%   

  • 4001-61-0

  • 100g

  • 6983.0CNY

  • Detail
  • Aldrich

  • (275468)  2,5-Dimethylbenzenethiol  97%

  • 4001-61-0

  • 275468-5G

  • 621.27CNY

  • Detail



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

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017


1.1 GHS Product identifier

Product name 2,5-Dimethylbenzenethiol

1.2 Other means of identification

Product number -
Other names 2,5-DiMethylbenzenethiol

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:4001-61-0 SDS

4001-61-0Relevant articles and documents

Copper-catalyzed coupling of thiourea with aryl iodides: The direct synthesis of aryl thiols

Qiao, Shu,Xie, Kun,Qi, Junsheng

scheme or table, p. 1441 - 1443 (2011/01/04)

A general, economical and efficient protocol for the direct copper-catalyzed coupling of thiourea with aryl iodides is developed and it will be potentially applied in large-scale industry as a preferred process.


Bock, Hans,Rittmeyer, Peter

, p. 261 - 292 (2007/10/02)

The single electron oxidation of 14 alkyl and alkoxy substituted diaryldisulfides by AlCl3/H2CCl2 has been investigated by ESR/ENDOR spectroscopy.The radical cations observed prove the following skeletal rearrangements: Those with ring hydrogens in ortho positions to the disulfide bridge preferentially form thianthrene derivatives.The isomeric dinaphthyl disulfides react differently, the 2,2'-isomer yielding the dibenzothianthrene radical cation and the 1,1'-isomer the well-known naphthalene-1,8-disulfide radical cation.For all diaryl disulfides with completely alkyl- or methoxy-blocked ortho positions, oxidative desulfuration is observed.As substantiated by additional (2)D and (33)S isotope marking, the bis(2,5-dimethoxyphenyl)disulfide reacts both to the corresponding thianthrene derivative as well as via desulfuration to the radical cation of the monosulfide.Accompanying cyclovoltammetric and photoelectron spectroscopic measurements prove that all ESR spectroscopically detected radical cations result from compounds Ar-S-Ar, Ar-SS-Ar and Ar(S)2Ar with rather low oxidation or ionisation potentials and thus suggest that each the most easily oxidized paramagnetic species is observed in the rather complex product mixtures, which form on AlCl3/H2CCl2 oxidation of diaryldisulfides. Key words: Diaryl disulfides; one-electron oxidation; radical cations; ESR/ENDOR spectra.

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