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502607-05-8

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502607-05-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 502607-05-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,2,6,0 and 7 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 502607-05:
(8*5)+(7*0)+(6*2)+(5*6)+(4*0)+(3*7)+(2*0)+(1*5)=108
108 % 10 = 8
So 502607-05-8 is a valid CAS Registry Number.

502607-05-8Relevant articles and documents

Superacid catalyzed hydroxyalkylation of aromatics with ethyl trifluoropyruvate: A new synthetic route to Mosher's acid analogs

Prakash, G. K. Surya,Yan, Ping,T?r?k, Béla,Olah, George A.

, p. 527 - 531 (2007/10/03)

A new superacid catalyzed Friedel-Crafts hydroxyalkylation of aromatics with ethyl trifluoropyruvate is described. The trifluoromethanesulfonic acid or gallium(III) trifluoromethane-sulfonate catalyzed reactions give α-hydroxy α-trifluoromethyl phenyl acetic acid ethyl ester and its derivatives (analogs of Mosher's acid) in good yields for both highly activated heteroaromatics and substituted benzenes.

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