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1342310-57-9

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1342310-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1342310-57-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,4,2,3,1 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1342310-57:
(9*1)+(8*3)+(7*4)+(6*2)+(5*3)+(4*1)+(3*0)+(2*5)+(1*7)=109
109 % 10 = 9
So 1342310-57-9 is a valid CAS Registry Number.

1342310-57-9Downstream Products

1342310-57-9Relevant articles and documents

Facile synthesis and characterization of substituted pyrimidin-2(1H)-ones and their chalcone precursors

Ajani, Olayinka Oyewale,Ituen, Ruth Itoroabasi,Falomo, Ayorinde

experimental part, p. 59 - 67 (2012/06/01)

A new and efficient method has been developed for the quantitative transformation of chalcones to pyrimidine frame work vSa solid support catalysis, Silica supported sulphuric acid (SSA) efficiently catalyzed the reaction of α-β-unsaturated earbonyl, chalcones (140) with urea to afford substituted pyriniidin-2(1H)-ones (11-20) hi good to excellent yield. The interesting behaviour of SSA lies in the thct that it can be re-used after simple washing with chloroform thereby rendering this procedure more economical, The chemical structures were confirmed by analytical data as well as spectroscopic means.

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