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85152-57-4

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85152-57-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 85152-57-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,5,1,5 and 2 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 85152-57:
(7*8)+(6*5)+(5*1)+(4*5)+(3*2)+(2*5)+(1*7)=134
134 % 10 = 4
So 85152-57-4 is a valid CAS Registry Number.

85152-57-4Upstream product

85152-57-4Downstream Products

85152-57-4Relevant articles and documents

THE PROTON ACTIVATING FACTOR AND ITS APPLICATION TO ACID AND BASE CATALYSIS OF ALDEHYDE HYDRATION

Stewart, Ross

, p. 907 - 910 (2007/10/02)

The data of McClelland and Coe for the general acid and general base catalyzed hydration of a series of substituted benzaldehydes has been analyzed in terms of the proton activating factor, paf, and concepts related thereto.Although the latter were derived for use with prototropic systems, the present work shows that they have application to nucleophilic addition as well.Three conclusions emerge from the analysis.1.Alternative means of calculating paf from buffer catalytic data that were previously derived on theoretical grounds can be used in practice to give essentially the same results.2.The mechanism of the general acid catalyzed pathway for aldehyde hydration is that favoured by McLelland and Coe and by Jencks, to wit the class (e) mechanism, rather than the class (n) mechanism.3.Electron-withdrawing groups in the benzaldehyde ring cause the disparity between the contributions of alternative, kinetically equivalent, pathways for the uncatalyzed reaction to become greater.

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