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139545-87-2

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139545-87-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139545-87-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,5,4 and 5 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 139545-87:
(8*1)+(7*3)+(6*9)+(5*5)+(4*4)+(3*5)+(2*8)+(1*7)=162
162 % 10 = 2
So 139545-87-2 is a valid CAS Registry Number.

139545-87-2Relevant academic research and scientific papers

SYNTHESIS OF A CONTIGUOUS TRICYCLIC PURINE SYSTEM: ENTRY TO UNIQUE NUCLEOSIDES

Nair, Vasu,Purdy, David F.

, p. 7503 - 7506 (1991)

A unique class of hypermodified purine nucleosides, where the carbohydrate moiety is fused to the imidazole ring, has been designed and synthesized regiospecifically and stereospecifically using a multi-step approach and stereochemically defined carbohydrate precursors.

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