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161388-91-6

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161388-91-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 161388-91-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,3,8 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 161388-91:
(8*1)+(7*6)+(6*1)+(5*3)+(4*8)+(3*8)+(2*9)+(1*1)=146
146 % 10 = 6
So 161388-91-6 is a valid CAS Registry Number.

161388-91-6Relevant articles and documents

Solid-Phase Oligodeoxynucleotide Synthesis: A Two-Step Cycle Using Peroxy Anion Deprotection

Sierzchala, Agnieszka B.,Dellinger, Douglas J.,Betley, Jason R.,Wyrzykiewicz, Tadeusz K.,Yamada, Christina M.,Caruthers, Marvin H.

, p. 13427 - 13441 (2007/10/03)

A novel solid-phase phosphoramidite based oligodeoxynucleotide two-step synthesis method has been developed. Keys to this method are replacement of the 5′-dimethoxytrityl blocking group with an aryloxycarbonyl and the use of N-dimethoxytrityl protection for the exocyclic amines of adenine and cytosine. With these modifications, coupling of each 2′-deoxynucleoside 3′-phosphoramidite to the growing oligodeoxynucleotide on the solid support can be followed by treatment with an aqueous mixture of peroxy anions buffered at pH 9.6. This reagent effectively removes the carbonate protecting group and simultaneously oxidizes the phosphite internucleotide linkage. As a consequence a new two-step synthesis cycle is possible. Oligodeoxynucleotides synthesized using this approach are identical to authentic samples when tested by a variety of analytical techniques.

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