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1240259-25-9

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1240259-25-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1240259-25-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,0,2,5 and 9 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1240259-25:
(9*1)+(8*2)+(7*4)+(6*0)+(5*2)+(4*5)+(3*9)+(2*2)+(1*5)=119
119 % 10 = 9
So 1240259-25-9 is a valid CAS Registry Number.

1240259-25-9Upstream product

1240259-25-9Downstream Products

1240259-25-9Relevant academic research and scientific papers

Synthesis of DNA with spirobenzopyran as an internal covalent modification

Beyer, Christoph,Wagenknecht, Hans-Achim

experimental part, p. 1371 - 1376 (2010/08/22)

The photochromic spirobenzopyran was incorporated as an internal modification into oligonucleotides by two different synthetic strategies: For the first route the spiropyran phosphoramidite was synthesized as a DNA building block, whereas for the second route the postsynthetic click-type ligation was applied. Photoinduced ring opening of the chromophore could not be achieved in duplex DNA.

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