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161664-15-9

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161664-15-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 161664-15-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,6,6 and 4 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 161664-15:
(8*1)+(7*6)+(6*1)+(5*6)+(4*6)+(3*4)+(2*1)+(1*5)=129
129 % 10 = 9
So 161664-15-9 is a valid CAS Registry Number.

161664-15-9Relevant articles and documents

1-(2'-Deoxy-β-D-xylofuranosyl)cytosine: Base pairing of oligonucleotides with a configurationally altered sugar-phosphate backbone

Seela,Worner,Rosemeyer

, p. 883 - 896 (1994)

Solid-phase synthesis of the oligo(2'-deoxynucleotides) 19 and 20 containing 2'-deoxy-β-D-xylocytidine (4) is described. For this purpose, 1-(2-deoxy-β-D-threo-pentofuranosyl)cytosine (= 1-(2-deoxy-β-D-xylofuranosyl)cytosine; 4) was protected at its 4-NH

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