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9-demethyl-9-tosylisocolchicine is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

129491-66-3

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129491-66-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129491-66-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,4,9 and 1 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 129491-66:
(8*1)+(7*2)+(6*9)+(5*4)+(4*9)+(3*1)+(2*6)+(1*6)=153
153 % 10 = 3
So 129491-66-3 is a valid CAS Registry Number.

129491-66-3Relevant academic research and scientific papers

Tautomeric selectivity towards colchicinoids in the tosylation of colchiceine on a heterogeneous, easily removable catalyst.

Cavazza, Marino,Pietra, Francesco

, p. 3002 - 3003 (2007/10/03)

Here is presented an easy, rapid new method of tosylation of compounds containing acidic OH groups, such as tropolones and phenols, on a solid, removable catalyst, Amberlite IRA-400(OH); of special value is the preferential selectivity for the colchiceine

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