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204191-68-4

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204191-68-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 204191-68-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,1,9 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 204191-68:
(8*2)+(7*0)+(6*4)+(5*1)+(4*9)+(3*1)+(2*6)+(1*8)=104
104 % 10 = 4
So 204191-68-4 is a valid CAS Registry Number.

204191-68-4SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name 2,3,4,5,6-pentafluoro-1-(2-thiophenyl)benzene

1.2 Other means of identification

Product number -
Other names 2-perfluorophenylthiophene

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:204191-68-4 SDS

204191-68-4Relevant articles and documents

Building blocks for n-type organic electronics: Regiochemically modulated inversion of majority carrier sign in perfluoroarene-modified polythiophene semiconductors

Facchetti, Antonio,Yoon, Myung-Han,Stern, Charlotte L.,Katz, Howard E.,Marks, Tobin J.

, p. 3900 - 3903 (2003)

A new family of perfluoroarene-modified thiophene semiconductors 1-3 has been synthesized to assess the influence of perfluoroarene introduction and regiochemistry on molecular and thin-film transistor properties. Compound 1 is an n-type semiconductor wit

Syntheses of 2-(pentafluorophenyl)thiophene derivatives via the palladium-catalyzed Suzuki reaction

Takimiya, Kazuo,Niihara, Naoto,Otsubo, Tetsuo

, p. 1589 - 1592 (2005)

Various bis(pentafluorophenyl)-substituted thiophene and selenophene derivatives are effectively synthesized by the palladium-catalyzed Suzuki reaction using pentafluorophenyl boronic acid. Georg Thieme Verlag Stuttgart.

End-Capping Groups for Small-Molecule Organic Semiconducting Materials: Synthetic Investigation and Photovoltaic Applications through Direct C–H (Hetero)arylation

Lu, Te-Jui,Lin, Po-Han,Lee, Kun-Mu,Liu, Ching-Yuan

, p. 111 - 123 (2017/01/14)

A Pd-catalyzed C–H (hetero)arylation methodology has been optimized for the efficient synthesis of various useful end-capping groups that are widely applied in small-molecule optoelectronic materials. We report herein the synthesis of a broad scope of target molecules ranging from donor-type through acceptor-type to hybrid-type end-capping groups. To demonstrate their application in dye-sensitized solar cells, we have designed two new D–A–π–A′-type organic sensitizers (CYL-3 and CYL-4), which were synthesized in a step-economic manner by sequential C–H arylations using the facilely obtained end-capping groups. The devices based on CYL-3 and CYL-4 give Vocvalues of 0.67–0.71 V, Jscvalues of 10.07–11.63 mA cm–2, and FF values of 70.6–72.9 %, which correspond to overall power conversion efficiencies of 4.76–6.02 %. This work is expected to become a practical synthetic alternative allowing materials scientists to access small-molecule organic materials in fewer synthetic transformations.

Nickel-catalyzed decarboxylative cross-coupling of perfluorobenzoates with aryl halides and sulfonates

Sardzinski, Logan W.,Wertjes, William C.,Schnaith, Abigail M.,Kalyani, Dipannita

supporting information, p. 1256 - 1259 (2015/05/20)

A Ni-catalyzed method for the coupling of perfluorobenzoates with aryl halides and pseudohalides is described. Aryl iodides, bromides, chlorides, triflates, and tosylates participate in these transformations to afford the products in good yields. Penta-, tetra-, and trifluorinated biaryl compounds are obtained using these newly developed Ni-catalyzed decarboxylative cross-coupling reactions.

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