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161204-59-7

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161204-59-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 161204-59-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,2,0 and 4 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 161204-59:
(8*1)+(7*6)+(6*1)+(5*2)+(4*0)+(3*4)+(2*5)+(1*9)=97
97 % 10 = 7
So 161204-59-7 is a valid CAS Registry Number.

161204-59-7Relevant articles and documents

Functionalized Azo Dyes by Direct Ullmann Coupling

Miller, R. D.,Lee, V. Y.,Twieg, R. J.

, p. 245 - 246 (1995)

A variety of thermally stable 4-(N,N-diarylamino)-4'-nitroazobenzene dyes can be produced by direct copper-mediated C-N bond formation on preformed amino substituted azo dyes, thus avoiding a troublesome azo coupling step; the products are useful chromophores for high temperature nonlinear optical applications.

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