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185738-33-4

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185738-33-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 185738-33-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,5,7,3 and 8 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 185738-33:
(8*1)+(7*8)+(6*5)+(5*7)+(4*3)+(3*8)+(2*3)+(1*3)=174
174 % 10 = 4
So 185738-33-4 is a valid CAS Registry Number.

185738-33-4Relevant articles and documents

Dephosphonylation of protected deoxynucleoside and oligodeoxynucleotide H-phosphonates

Reese, Colin B.,Visintin, Cristina

, p. 6477 - 6480 (1999)

The conversion of four 5'-O-(4,4'-dimethoxytrityl)-2'- deoxyribonucleoside 3'-H-phosphonates 1 (B=4, 5, 6 and 7) into their partially-protected nucleoside precursors 3 (B=4, 5, 6 and 7, respectively) in good isolated yields is described. The procedure used is also suitable for the dephosphonylation of protected oligonucleotide H-phosphonate blocks.

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