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222533-31-5

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222533-31-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 222533-31-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,2,5,3 and 3 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 222533-31:
(8*2)+(7*2)+(6*2)+(5*5)+(4*3)+(3*3)+(2*3)+(1*1)=95
95 % 10 = 5
So 222533-31-5 is a valid CAS Registry Number.

222533-31-5Relevant articles and documents

Mesyl guaiacol: A versatile intermediate for the synthesis of 5-aminomethyl guaiacol and related compounds

Bensel, Nicolas,Pevere, Virginie,Desmurs, Jean Roger,Wagner, Alain,Mioskowski, Charles

, p. 4281 - 4283 (2002)

An original synthetic pathway for the preparation of 5-substituted guaiacol derivatives is described. This method relies on the deactivation of the phenol group by converting it into the corresponding mesyl ester. Amidomethylation reactions lead to regioselective C-C bond formation at the 5-position of guaiacol. Thus, 5-aminomethyl-guaiacol was obtained in four steps and 75% overall yield.

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