280557-39-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 280557-39-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,0,5,5 and 7 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 280557-39:
(8*2)+(7*8)+(6*0)+(5*5)+(4*5)+(3*7)+(2*3)+(1*9)=153
153 % 10 = 3
So 280557-39-3 is a valid CAS Registry Number.
280557-39-3Relevant articles and documents
Phenylsulfonylethylidene (PSE) acetals: A novel protective group in carbohydrate chemistry
Chéry,Rollin,De Lucchi,Cossu
, p. 286 - 292 (2007/10/03)
A range of sugar-derived phenylsulfonylethylidene acetals were easily obtained from the corresponding diols and 1,2-bis(phenylsulfonyl)ethylene under basic conditions. Deprotection methods for such acetals have also been investigated.
