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868856-45-5

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868856-45-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 868856-45-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,8,8,5 and 6 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 868856-45:
(8*8)+(7*6)+(6*8)+(5*8)+(4*5)+(3*6)+(2*4)+(1*5)=245
245 % 10 = 5
So 868856-45-5 is a valid CAS Registry Number.

868856-45-5Relevant articles and documents

Efficient synthetic approach to substituted benzo[b]furans and benzo[b]thiophenes by iodine-promoted cyclization of enaminones

Labarrios, Ehecatl,Jerezano, Alberto,Jimenez, Fabiola,Del Carmen Cruz, Maria,Delgado, Francisco,Zepeda, L. Gerardo,Tamariz, Joaquin

, p. 954 - 971 (2014/08/05)

An efficient synthetic approach to the substituted benzo[b]furan and benzo[b]thiophene scaffolds by iodine-mediated cyclization of the corresponding enaminones is described. This protocol was applied to a large series of these latter precursors to afford the respective benzoheterocycles substituted at the C-2 position by a carbonyl group functionality. A study of the factors that control this process reveals that the reactivity depends on the presence of electron-donor groups in the aryl ring of the aryloxycarbonylic and arylthiocarbonylic moieties.

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