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421663-11-8

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421663-11-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 421663-11-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,1,6,6 and 3 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 421663-11:
(8*4)+(7*2)+(6*1)+(5*6)+(4*6)+(3*3)+(2*1)+(1*1)=118
118 % 10 = 8
So 421663-11-8 is a valid CAS Registry Number.

421663-11-8Relevant articles and documents

Regioselective synthesis and metallation of tributylstannylfluoropyrazines. Application to the synthesis of some new fluorinated liquid crystals diazines. Part 34

Toudic, Frédéric,Heynderickx, Arnault,Plé, Nelly,Turck, Alain,Quéguiner, Guy

, p. 6375 - 6384 (2007/10/03)

Starting from fluoropyrazine, a general synthetic route including metallation and palladium-catalyzed cross-coupling reactions is described to access to rod-like alkylaryl or diarylpyrazines. Among them, some have liquid crystalline properties.

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