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899435-27-9

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899435-27-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 899435-27-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,9,9,4,3 and 5 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 899435-27:
(8*8)+(7*9)+(6*9)+(5*4)+(4*3)+(3*5)+(2*2)+(1*7)=239
239 % 10 = 9
So 899435-27-9 is a valid CAS Registry Number.

899435-27-9Relevant articles and documents

A new approach to oligonucleotide N3′ → P5′ phosphoramidate building blocks

Zielinska, Daria,Pongracz, Krisztina,Gryaznov, Sergei M.

, p. 4495 - 4499 (2006)

A new synthetic approach to 5′-phosphoramidites of 3′-aminonucleosides was developed. The methodology relies upon the use of 3′-amino-2′,3′-dideoxynucleosides as the key starting materials. The final products were obtained in high yields via 2-3-step processes using selective introduction of orthogonal protective groups to the 3′-aminonucleoside sugar and base moieties.

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