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105791-57-9

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105791-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 105791-57-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,7,9 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 105791-57:
(8*1)+(7*0)+(6*5)+(5*7)+(4*9)+(3*1)+(2*5)+(1*7)=129
129 % 10 = 9
So 105791-57-9 is a valid CAS Registry Number.

105791-57-9Relevant articles and documents

A practical synthesis of 2-chloro-2′-deoxyadenosine (Cladribine) from 2′-deoxyadenosine

Peng, Yao

, p. 213 - 215 (2013)

A practical synthesis of 2-chloro-2′-deoxyadenosine (Cladribine) from 2′-deoxyadenosine is reported. Treatment of fully protected 2′-deoxyadenosine with 2,2,2-trifluoroacetic anhydride and tetrabutylammonium nitrate gave protected 2-nitro-2′-deoxyadenosine with high yield. 2-Chloro-2′-deoxyadenosine was synthesised in four steps and 44.8% yield after substitution by chloride and deprotection steps.

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