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1256563-91-3

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1256563-91-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1256563-91-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,6,5,6 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1256563-91:
(9*1)+(8*2)+(7*5)+(6*6)+(5*5)+(4*6)+(3*3)+(2*9)+(1*1)=173
173 % 10 = 3
So 1256563-91-3 is a valid CAS Registry Number.

1256563-91-3Relevant academic research and scientific papers

Iterative synthesis of heterotelechelic oligo(phenylene-vinylene)s by olefin cross-metathesis

Norris, Benjamin N.,Pan, Tianqi,Meyer, Tara Y.

, p. 5514 - 5517 (2011/03/18)

A novel iterative synthesis of heterotelechelic oligo(phenylene-vinylene)s using olefin cross-metathesis is reported. The metathesis homologation proceeds in good yields and allows for further functionalization, including the facile formation of donor-acceptor complexes and repeating sequence copolymers.

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