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40431-34-3

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40431-34-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40431-34-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,4,3 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 40431-34:
(7*4)+(6*0)+(5*4)+(4*3)+(3*1)+(2*3)+(1*4)=73
73 % 10 = 3
So 40431-34-3 is a valid CAS Registry Number.

40431-34-3Relevant articles and documents

A simple and efficient synthesis of methyl 3,4-dihydro-2-methyl-2H-1,2- benzothiazine-3-carboxylate 1,1-dioxide from saccharin sodium salt

Vidal, Aurelien,Madelmont, Jean-Claude,Mounetou, Emmanuelle

, p. 591 - 593 (2006)

A straightforward synthesis of methyl 3,4-dihydro-2-methyl-2H-1,2- benzothiazine-3-carboxylate 1,1-dioxide from saccharin sodium salt was achieved in five steps. Methyl 3,4-dihydro-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide found application as a precursor for the synthesis of a new class of quaternary ammonium derivatives that are potential antiosteoarthritis agents. Georg Thieme Verlag Stuttgart.

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