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31199-21-0

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31199-21-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31199-21-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,1,9 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 31199-21:
(7*3)+(6*1)+(5*1)+(4*9)+(3*9)+(2*2)+(1*1)=100
100 % 10 = 0
So 31199-21-0 is a valid CAS Registry Number.

31199-21-0Relevant articles and documents

ACTION DU N-BROMOSUCCINIMIDE SUR LES DIOXOLANNES EN SERIE BICYCLOHEPTANIQUE. LIMITATION DES TRANSPOSITIONS DE WAGNER-MEERWEIN

Bazbouz, Akram,Christol, Henri,Coste, Jacques,Plenat, Francoise

, p. 2745 - 2755 (2007/10/02)

Vicinal benzoyloxy-trans-bicycloheptanic bromhydrins, otherwise difficult to obtain are formed from N-bromosuccinimide and norbornanes bearing a 2-aryl-1,3 dioxolane skeleton.The greater stability of the intermediate dioxolenium ion reduces the tendency towards both Wagner-Meerwein rearrangement and neighbouring group participation by chlorine, processes usually observed when a less stable intermediate is involved.Nevertheless, methoxycarbonyl neighbouring group participation and Wagner-Meerwein rearrangement occur in methoxycarbonylbicycloheptane and in a bornanic compound respectively.

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