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258343-64-5

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258343-64-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 258343-64-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,8,3,4 and 3 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 258343-64:
(8*2)+(7*5)+(6*8)+(5*3)+(4*4)+(3*3)+(2*6)+(1*4)=155
155 % 10 = 5
So 258343-64-5 is a valid CAS Registry Number.

258343-64-5Downstream Products

258343-64-5Relevant articles and documents

Condensation of substituted 2-aminopyridine with β-ketocarboxylic esters: 4H-pyrido[1,2-a]pyrimidin-4-ones and pyridin-2-ones

Ferrarini, Pier Luigi,Mori, Claudio,Manera, Clementina,Mori, Filippo,Calderone, Vincenzo,Martinotti, Enrica

, p. 1123 - 1127 (2007/10/03)

We report the condensation of substituted 2-aminopyridines 5 with β- ketocarboxylic esters in polyphosphoric acid. In this reaction were obtained together with the target compounds, 4H-pyrido[1,2-a]pyrimidin-4-ones 6 also the pyridin-2-ones 7. All the compounds 7 were tested for their calcium- antagonistic activity but failed to evoke any vasorelaxant response.

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