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267007-97-6

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267007-97-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 267007-97-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,7,0,0 and 7 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 267007-97:
(8*2)+(7*6)+(6*7)+(5*0)+(4*0)+(3*7)+(2*9)+(1*7)=146
146 % 10 = 6
So 267007-97-6 is a valid CAS Registry Number.

267007-97-6Relevant articles and documents

An efficient method for the synthesis of 4,5-disubstituted catechols

Ma, Tingli,Kojima, Takahiko,Matsuda, Yoshihisa

, p. 747 - 748 (2007/10/03)

4,5-Disubstituted catechols were prepared in high yields via successive Friedel-Crafts acylation in the presence of a Ti(IV) catalyst or I2 and reduction with triethylsilane of veratroles. This method provides an effective and well-regulated synthetic strategy toward catechol derivatives having a variety of substituents at the 4- and 5- positions.

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