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420124-37-4

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420124-37-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 420124-37-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,0,1,2 and 4 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 420124-37:
(8*4)+(7*2)+(6*0)+(5*1)+(4*2)+(3*4)+(2*3)+(1*7)=84
84 % 10 = 4
So 420124-37-4 is a valid CAS Registry Number.

420124-37-4Relevant articles and documents

Synthesis of pyrazolotriazolopyrimidine tri-fused heterocyclic compounds

Liu, Ying,Ren, Jun,Jin, Gui-Yu

, p. 50 - 52 (2007/10/03)

This paper uses basic-catalysed method to convert 1H-pyrazole-4-carboxamides into tri-fused heterocyclic systems containing two kinds of pyrazolotriazolopyrimidine framework. The synthesis of compounds 5-6 and reactions of them with some electrophiles hav

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