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888498-57-5

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888498-57-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 888498-57-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,8,4,9 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 888498-57:
(8*8)+(7*8)+(6*8)+(5*4)+(4*9)+(3*8)+(2*5)+(1*7)=265
265 % 10 = 5
So 888498-57-5 is a valid CAS Registry Number.

888498-57-5Relevant articles and documents

Highly regioselective Friedel-Crafts reactions of electron-rich aromatic compounds with pyruvate catalyzed by Lewis acid-base: Efficient synthesis of pesticide cycloprothrin

Si, Yu-Gui,Chen, Jun,Li, Fan,Li, Jin-Hua,Qin, Ye-Jun,Jiang, Biao

, p. 898 - 904 (2006)

An efficient synthesis of aromatic lactate esters is reported via highly regioselective Friedel-Crafts reactions of electron-rich aromatic compounds with pyruvate ester promoted by TiCl4 in the presence of basic Al 2O3. The utility of the reaction is shown by the efficient synthesis of the pesticide cycloprothrin in high yield.

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