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133728-85-5

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133728-85-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133728-85-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,7,2 and 8 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 133728-85:
(8*1)+(7*3)+(6*3)+(5*7)+(4*2)+(3*8)+(2*8)+(1*5)=135
135 % 10 = 5
So 133728-85-5 is a valid CAS Registry Number.

133728-85-5Relevant academic research and scientific papers

(2-Acetoxyphenoxy)ethyl (APOe) as a phosphate protecting group in solid-phase synthesis of oligonucleotides via the phosphoramidite approach

Cheruvallath, Zacharia S.,Eleuteri, Alessandra,Turney, Brett,Ravikumar, Vasulinga T.

, p. 251 - 256 (2006)

The (2-Acetoxyphenoxy)ethyl (APOe) group could be an alternative to the conventional 2-cyanoethyl group for phosphate protection in solid-phase oligonucleotide synthesis to circumvent DNA alkylation by acrylonitrile generated under basic condition. This g

Efficient synthesis of deoxyribonucleoside phosphoramidites by eliminating the use of additional activator

Eleuteri, Alessandra,Capaldi, Daniel C.,Cole, Douglas L.,Ravikumar, Vasulinga T.

, p. 1879 - 1882 (1999)

An efficient, safe and cost effective synthesis of deoxyribonucleoside phosphoramidites is described. The amine hydrochloride produced as a by- product during the synthesis of nucleoside phosphorbisamidite is used as an internal activator in the synthesis

Method of preparing phosphoramidites

-

Example 5, (2008/06/13)

Improved methods for preparation of phosphoramidite compounds are disclosed. The phosphoramidites are useful, for example, for the preparation of oligonucleotides by solid state oligonucleotide synthetic regimes.

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