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203172-89-8

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203172-89-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 203172-89-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,1,7 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 203172-89:
(8*2)+(7*0)+(6*3)+(5*1)+(4*7)+(3*2)+(2*8)+(1*9)=98
98 % 10 = 8
So 203172-89-8 is a valid CAS Registry Number.

203172-89-8Relevant articles and documents

Synthesis of phosphonate analogues of 2-deoxyribose-1-phosphate

Rubira, María-José,Pérez-Pérez, María-Jesús,Balzarini, Jan,Camarasa, María-José

, p. 177 - 179 (2007/10/03)

Phosphonate derivatives of 2-deoxyribose have been synthesized for the first time, by Lewis acid-mediated reaction of glycosyl donors with diisopropylhydroxymetylphosphonate for compounds 2 or with triisopropyl phosphite for compounds 3. Although, the selectivity of the reaction was moderate, in both cases the α-glycosides were predominantly obtained.

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