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163232-53-9

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163232-53-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 163232-53-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,3,2,3 and 2 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 163232-53:
(8*1)+(7*6)+(6*3)+(5*2)+(4*3)+(3*2)+(2*5)+(1*3)=109
109 % 10 = 9
So 163232-53-9 is a valid CAS Registry Number.

163232-53-9Downstream Products

163232-53-9Relevant articles and documents

L-Proline as an efficient catalyst for synthesis of N-heterocyclic chalcones as potential antibacterial agents

Bhupathi, Raja S.,Devi, B. Rama,Dubey

, p. 855 - 859 (2012/08/14)

The condensation of 4-hydroxy-3-acetyl-1H-quinoline-2-one 1 and substitutedbenzaldehydes 2a-i in DMSO solution at room temperature yields quinolone chalcone derivatives 3a-i. L-Proline has been found to be an efficient catalyst for this condensation between 1 and 2. Only 5 mol% of the catalyst is necessary to achieve good yields of the products. Reactions proceed smoothly with variations of the substituents. 1 itself is synthesized by the acylation of commercially available methyl anthranilate 4 with acetoacetic ester 5 in refluxing xylene and subsequent Dieckman intramolcular cyclization of the intermediary 2-methoxycarbonylanilide 6.

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