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899435-22-4

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899435-22-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 899435-22-4 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 2 respectively.
Calculate Digit Verification of CAS Registry Number 899435-22:
(8*8)+(7*9)+(6*9)+(5*4)+(4*3)+(3*5)+(2*2)+(1*2)=234
234 % 10 = 4
So 899435-22-4 is a valid CAS Registry Number.

899435-22-4Relevant articles and documents

Synthesis of all four nucleoside-based β-amino acids as protected precursors for the synthesis of polyamide-DNA with alternating α-amino acid and nucleoside-β-amino acids

Bagmare, Seema,Varada, Manojkumar,Banerjee, Anjan,Kumar, Vaijayanti A.

, p. 1210 - 1216 (2013/02/23)

A simple approach is described for the synthesis of all four orthogonally protected nucleoside-β-amino acids from commercially available starting materials. Synthesis of a model tetrameric DNA sequence in 5′-3'direction employing trityl strategy and glycine as α-amino acid alternating with nucleoside-β amino acids is described.

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

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

, p. 4495 - 4499 (2007/10/03)

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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