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847979-67-3

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847979-67-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 847979-67-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,4,7,9,7 and 9 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 847979-67:
(8*8)+(7*4)+(6*7)+(5*9)+(4*7)+(3*9)+(2*6)+(1*7)=253
253 % 10 = 3
So 847979-67-3 is a valid CAS Registry Number.

847979-67-3Downstream Products

847979-67-3Relevant articles and documents

Oligoribonucleotide synthesis by the use of 1-(2-cyanoethoxy)ethyl (CEE) as a 2′-hydroxy protecting group

Umemoto, Tadashi,Wada, Takeshi

, p. 9529 - 9531 (2007/10/03)

A novel method for the synthesis of oligoribonucleotide using 1-(2-cyanoethoxy)ethyl (CEE) as a 2′-hydroxy protecting group has been developed. A novel method for the synthesis of oligoribonucleotides using 1-(2-cyanoethoxy)ethyl (CEE) as a 2′-hydroxy protecting group has been developed. A CEE group was introduced to the 2′-position of N-acyl-3′,5′-O-silyl-protected ribonucleosides under acidic conditions in good yields. The 2′-O-CEE group was found to be stable in an aqueous or ethanolic ammonia and was quickly removed by treatment with anhydrous tetrabutylammonium fluoride (TBAF). A combination of the use of N-acyl and 2′-O-CEE protecting groups enabled a reliable and complete two-step deprotection, first with NH3-EtOH, then with TBAF in THF, without cleavage of internucleotidic linkages.

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