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221351-76-4

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221351-76-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221351-76-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,3,5 and 1 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 221351-76:
(8*2)+(7*2)+(6*1)+(5*3)+(4*5)+(3*1)+(2*7)+(1*6)=94
94 % 10 = 4
So 221351-76-4 is a valid CAS Registry Number.

221351-76-4Relevant academic research and scientific papers

Diastereoselective synthesis of D-erythro- and D-threo-isoxazolidinyl nucleosides

Hyrosova, Eva,Fisera, Lubor,Kozisek, Jozef,Fronc, Marek

, p. 1233 - 1240 (2008/12/22)

The synthesis of isoxazolidinyl nucleosides based on the Vorbrueggen nucleosidation of 5-acetoxyisoxazolidines 5 and 9 is reported. The 1,3-dipolar cycloaddition of D-erythro-nitrone 4 with vinyl acetate proceeded with respectable anti-facial (84:16) and

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