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331963-57-6

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331963-57-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 331963-57-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,9,6 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 331963-57:
(8*3)+(7*3)+(6*1)+(5*9)+(4*6)+(3*3)+(2*5)+(1*7)=146
146 % 10 = 6
So 331963-57-6 is a valid CAS Registry Number.

331963-57-6Downstream Products

331963-57-6Relevant articles and documents

4-Hydroxy-2-quinolones. 149*. Synthesis, chemical transformations, and biological properties of β-N-acylhydrazides of 1-R-4-hydroxy-2-oxo-1,2- dihydro-quinoline-4-carboxylic acids

Ukrainets,Tkach,Yang, Liu Yang

experimental part, p. 1347 - 1354 (2009/05/27)

Two methods of preparation have been proposed and the synthesis has been effected of a large series of β-N-acylhydrazides of 1-R-4-hydroxy-2-oxo-1, 2-dihydroquinoline-3-carboxylic acids. The possibility of using various condensing agents for converting them into the corresponding 1,3,4-oxa-diazoloquinolines has been studied. Results are given of an investigation of the antitubercular activity of the synthesized compounds.

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