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118736-27-9

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118736-27-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 118736-27-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,8,7,3 and 6 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 118736-27:
(8*1)+(7*1)+(6*8)+(5*7)+(4*3)+(3*6)+(2*2)+(1*7)=139
139 % 10 = 9
So 118736-27-9 is a valid CAS Registry Number.

118736-27-9Relevant articles and documents

TRANSITION STATES IN INTRAMOLECULAR SN2 REACTIONS OF CARBANIONS. THE CLOSURE OF THREE-, FOUR- AND FIVE-MEMBERED RINGS

Benedetti, Fabio,Fabrissin, Silvio,Rusconi, Alessandro,Stirling, Charles J. M.

, p. 233 - 240 (2007/10/02)

The intramolecular displacement of aryl ethyl sulphonium by carbanions stabilised by two sulphonyl groups has been studied.Rates of cyclisation of three-, four- and five-membered rings follow the same trend observed in the analogous displacement of halides.The effects of substituents on the leaving group show that, in the series considered, variations in the extent of bond cleavage to the leaving group are small.

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