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39153-42-9

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39153-42-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39153-42-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,1,5 and 3 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 39153-42:
(7*3)+(6*9)+(5*1)+(4*5)+(3*3)+(2*4)+(1*2)=119
119 % 10 = 9
So 39153-42-9 is a valid CAS Registry Number.

39153-42-9Relevant articles and documents

Kinetics and mechanism of the aminolysis of phenyl dithiobenzoates

Oh, Hyuck Keun,Shin, Chul Ho,Lee, Ikchoon

, p. 1169 - 1174 (2007/10/02)

The kinetics and mechanism of the reactions of phenyl dithiobenzoates with anilines in acetonitrile at 55.0 deg C have been studied.The large magnitude of βx(βnuc) and the signs of cross-interaction constants, ρeXY > 0, ρYZ XZ > 0, are all consistent with the carbonyl addition mechanism in which the breakdown of the tetrahedral intermediate, T+/-, is rate limiting.The thiocarbonyl group (C=S) is found to favour amine expulsion in contrast to the carbonyl group (C=O) which favours the S-bonded nucleofuge expulsion from T+/-.The signs of cross-interaction constants, ρXY, ρYZ and/or ρXZ, are shown to provide useful mechanistic criteria for distinguishing, especially, the carbonyl addition mechanism involving the rate-limiting breakdown of the tetrahedral intermediate (T+/- from the concerted SN2 mechanism.

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