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220643-42-5

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220643-42-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 220643-42-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,6,4 and 3 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 220643-42:
(8*2)+(7*2)+(6*0)+(5*6)+(4*4)+(3*3)+(2*4)+(1*2)=95
95 % 10 = 5
So 220643-42-5 is a valid CAS Registry Number.

220643-42-5Relevant articles and documents

Introducing structural diversity in oligonycleotides via photolabile, convertible C5-substituted nucleotides

Kahl, Jeffrey D.,Greenberg, Marc M.

, p. 597 - 604 (2007/10/03)

Chemically synthesized oligonucleotides are functionalized at defined sites while in their protected form on solid-phase supports via the incorporation of nucleotides containing masked alkyl carboxylic acids or alkylamines. The reactive functional groups

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