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139747-28-7

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139747-28-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139747-28-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,7,4 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 139747-28:
(8*1)+(7*3)+(6*9)+(5*7)+(4*4)+(3*7)+(2*2)+(1*8)=167
167 % 10 = 7
So 139747-28-7 is a valid CAS Registry Number.

139747-28-7Relevant articles and documents

Stereochemically controlled competitive cyclisations with phenylthio migration in the synthesis of cyclic ethers

Sansbury,Warren

, p. 539 - 542 (2007/10/02)

Two primary alcohol groups attached by carbon chains to the same carbon atom complete in cyclisation to an episulphonium ion during acid-catalysed phenylthio migration. The anti product is formed exclusively even when this involves chemoselectivity betwee

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