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401812-92-8

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401812-92-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 401812-92-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,1,8,1 and 2 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 401812-92:
(8*4)+(7*0)+(6*1)+(5*8)+(4*1)+(3*2)+(2*9)+(1*2)=108
108 % 10 = 8
So 401812-92-8 is a valid CAS Registry Number.

401812-92-8Relevant articles and documents

Scaleable and efficient synthesis of 2'-deoxy-2'-N-phthaloyl nucleoside phosphoramidites for oligonucleotide synthesis.

Karpeisky, Alexander,Sweedler, David,Haeberli, Peter,Read, Javier,Jarvis, Keith,Beigelman, Leonid

, p. 3345 - 3347 (2007/10/03)

2'-Deoxy-2'-N-phthaloyl nucleosides were prepared from arabino nucleosides by triflate displacement with phthalimide in the presence of DBU. The corresponding phosphoramidites suitable for automated oligonucleotide synthesis were also synthesized. The scalability of described procedures was demonstrated on a 100-g scale preparation of 2'-deoxy-2'-amino-C phosphoramidite.

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