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872220-14-9

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872220-14-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 872220-14-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,2,2,2 and 0 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 872220-14:
(8*8)+(7*7)+(6*2)+(5*2)+(4*2)+(3*0)+(2*1)+(1*4)=149
149 % 10 = 9
So 872220-14-9 is a valid CAS Registry Number.

872220-14-9Relevant articles and documents

A fully aryl-substituted poly(ladder-type pentaphenylene): A remarkably stable blue-light-emitting polymer

Jacob, Josemon,Sax, Stefan,Gaal, Martin,List, Emil J. W.,Grimsdale, Andrew C.,Muellen, Klaus

, p. 9933 - 9938 (2005)

A new poly(ladder-type pentaphenylene) bearing aryl groups at all bridgehead positions has been prepared. In comparison to previously reported bridged poly(p-phenylene)-type polymers such as polyfluorene and polyindenofluorene, this polymer is optimized f

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