Cas 259235-34-2,2-benzenesulfinyl-spiro[5.7]tridecane-1,7-dione

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Check Digit Verification of cas no

The CAS Registry Mumber 259235-34-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,9,2,3 and 5 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 259235-34:
(8*2)+(7*5)+(6*9)+(5*2)+(4*3)+(3*5)+(2*3)+(1*4)=152
152 % 10 = 2
So 259235-34-2 is a valid CAS Registry Number.

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259235-34-2Relevant academic research and scientific papers

A general strategy to spiro[4.n]alk-2-ene-1,6-diones and spiro[5.n]alk- 2-ene-1,7-diones via intramolecular acylation of α-sulfinyl carbanions

Pohmakotr, Manat,Bunlaksananusorn, Tanasri,Tuchinda, Patoomratana

, p. 377 - 380 (2007/10/03)

A convenient and general synthetic method for spiro[4.n]alk-2-ene-1,6- diones and spiro[5.n]alk-2-ene-1,7-diones, which involves the intramolecular acylation of an α-sulfinyl carbanion, is described.

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