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680185-35-7

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680185-35-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 680185-35-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,0,1,8 and 5 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 680185-35:
(8*6)+(7*8)+(6*0)+(5*1)+(4*8)+(3*5)+(2*3)+(1*5)=167
167 % 10 = 7
So 680185-35-7 is a valid CAS Registry Number.

680185-35-7Downstream Products

680185-35-7Relevant articles and documents

Synthesis and properties of a ROMP backbone polymer with efficient, laterally appended nonlinear optical chromophores

Raimundo, Jean-Manuel,Lecomte, Steve,Edelmann, Michael J.,Concilio, Simona,Biaggio, Ivan,Bosshard, Christian,Guenter, Peter,Diederich, Francois

, p. 292 - 295 (2004)

The synthesis and properties of a new ROMP backbone polymer bearing lateral donor-acceptor-substituted (E)-diethynylethene ((E)-hex-3-ene-1,5-diyne) chromophores are described. The polymer with an average of 40 monomeric repeat units is readily soluble in common organic solvents such as tetrahydrofuran, dichloromethane and chloroform. Good optical-quality films were obtained by spin coating. The third-order susceptibility χ(3) at a wavelength of 1907 nm was determined to be 100 times greater than that of fused silica. After electrical poling, the polymer also showed a significant second-order nonlinear optical coefficient (d33) value, which decays by a factor of two over a period of one month at room temperature.

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