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(E)-2-(4-Hydroxy-phenyl)-ethenesulfonic acid 2,5-dinitro-phenyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

204446-71-9

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204446-71-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 204446-71-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,4,4 and 6 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 204446-71:
(8*2)+(7*0)+(6*4)+(5*4)+(4*4)+(3*6)+(2*7)+(1*1)=109
109 % 10 = 9
So 204446-71-9 is a valid CAS Registry Number.

204446-71-9Upstream product

204446-71-9Downstream Products

204446-71-9Relevant academic research and scientific papers

The Dissociative Route in the Alkaline Hydrolysis of Aryl 4-Hydroxy-β-styrenesulfonates

Cevasco, Giorgio,Thea, Sergio

, p. 2125 - 2129 (2007/10/03)

Reactivity comparisons, activation parameters, and the substituent effect in the leaving group indicate that the hydrolysis of title esters in moderately to strongly alkaline aqueous solution follows a dissociative pathway with the probable participation of an extended sulfoquinone (thioquinone dioxide) intermediate. The interposition of a vinylene group between the internal nucleophile and the reaction site favors the elimination-addition process. Present results further suggest the high tendency of suitably substituted sulfonyl derivatives to hydrolyze through dissociative mechanism.

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