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20820-51-3

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20820-51-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20820-51-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,2 and 0 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20820-51:
(7*2)+(6*0)+(5*8)+(4*2)+(3*0)+(2*5)+(1*1)=73
73 % 10 = 3
So 20820-51-3 is a valid CAS Registry Number.

20820-51-3Downstream Products

20820-51-3Relevant articles and documents

O-aryl phosphoramidites: Synthesis, reactivity and evaluation of their use for solid-phase synthesis of oligonucleotides

Eritja, Ramon,Smirnov, Valeriy,Caruthers, Marvin H.

, p. 721 - 730 (2007/10/02)

Deoxymicleoside 3′-O-arylphosphoramidites were studied as synthons for preparing natural and modified intenucleotide linkages. Of the various aryl derivatives examined, the 3′-O-phenylphosphoramidite was found to be the most attractive. It reacted with hi

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