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213205-45-9

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213205-45-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 213205-45-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,2,0 and 5 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 213205-45:
(8*2)+(7*1)+(6*3)+(5*2)+(4*0)+(3*5)+(2*4)+(1*5)=79
79 % 10 = 9
So 213205-45-9 is a valid CAS Registry Number.

213205-45-9Relevant articles and documents

Alkylation reactions of 3-(phenylsulfonyl)methyl substituted cyclopentenones

Padwa, Albert,Muller, Cheryl L.,Rodriguez, Augusto,Watterson, Scott H.

, p. 9651 - 9666 (2007/10/03)

The readily available 2,3-dibromo-1-(phenylsulfonyl)-1-propene (DBP) undergoes facile reaction with several 1,3-dicarbonyl compounds under basic conditions to give (phenylsulfonyl)methyl substituted cyclopentenones. The pendant sulfonyl group at the Csub

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