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1620831-61-9

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1620831-61-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1620831-61-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,8,3 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1620831-61:
(9*1)+(8*6)+(7*2)+(6*0)+(5*8)+(4*3)+(3*1)+(2*6)+(1*1)=139
139 % 10 = 9
So 1620831-61-9 is a valid CAS Registry Number.

1620831-61-9Relevant articles and documents

Base-Mediated synthesis of 1-aryl-4-(phenylsulfonyl)butan-1-ones from 1,2-bis(phenylsulfonyl)ethane and ketones

Xie, Ye-Xiang,Song, Ren-Jie,Liu, Yu,Wang, Zhi-Qiang,Xiang, Jian-Nan,Li, Jin-Heng

, p. 203 - 211 (2014/03/21)

A new, simple, base-mediated addition reaction of 1,2-bis(phenylsulfonyl) ethane to ketones has been developed for the synthesis of 1-aryl-4- (phenylsulfonyl)butan-1-ones. This method represents the first example of preparing sulfones using 1,2-bis(phenylsulfonyl)ethane as the sulfone resource.

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