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83846-22-4

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83846-22-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83846-22-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,8,4 and 6 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 83846-22:
(7*8)+(6*3)+(5*8)+(4*4)+(3*6)+(2*2)+(1*2)=154
154 % 10 = 4
So 83846-22-4 is a valid CAS Registry Number.

83846-22-4Relevant articles and documents

Dehydration of 1-Substituted Secondary and Tertiary Bicyclononan-9-ols. A Substituent-Driven Rearrangement to 4-Substituted and/or Angularly Substituted Hexahydroindenes

Balata, Fabrizio,Jacono, Anna R. Dello,Gambacorta, Augusto

, p. 566 - 570 (2007/10/02)

The acid-catalyzed dehydration of substituted bicyclononan-9-ols (1-9) has been studied as a route to substituted hexahydroindenes via skeletal rearrangement.The nature of the substituent at C1 strongly affects the rearrangement.Thus 1-substituted secondary alcohols 1-3 (R = Ph, CH3, H) afford 4-substituted 2,3,4,5,6,7-hexahydroindenes 1b-3b, while a mixture of 3a-carbethoxyhexahydroindenes (4a,b) is produced from 4 (R = CO2Et).Tertiary alcohols 5-9 afford cis-3a-substituted 2,3,3a,6,7,7a-hexahydroindenes 1a-9a.These processes are discussed in terms of relative stabilities of the intermediate carbonium ions.

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