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400031-49-4

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400031-49-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 400031-49-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,0,0,3 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 400031-49:
(8*4)+(7*0)+(6*0)+(5*0)+(4*3)+(3*1)+(2*4)+(1*9)=64
64 % 10 = 4
So 400031-49-4 is a valid CAS Registry Number.

400031-49-4Relevant articles and documents

Synthesis of some 2-thioxopyrido[2,3-d]pyrimidine ribofuranosides and their antimicrobial activity

Kumar, Neeraj,Singh, Gajendra,Yadav, Ashok K.

, p. 217 - 225 (2007/10/03)

2-Thioxo-3,5,7-trisubstituted-1-[2′,3′.5′-tri-O-benzoyl-β -D-ribofuranosyl]pyrido[2,3-d]pyri midin-4(IH)-ones have been prepared by the condensation of trimethylsilyl derivative of 2-thioxo-3,5,7-trisubstituted pyrido[2,3-d]pyrimidin-4(IH)-ones with β-D-ribofuranose 1-acetate-2,3,5-tribenzoate in 65%-78% yield. The structure of the synthesized ribofuranosides and their precursors have been established by IR. 1H NMR and elemental analysis. These derivatives have been screened for their antimicrobial activity.

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