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4870-21-7

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4870-21-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4870-21-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,8,7 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4870-21:
(6*4)+(5*8)+(4*7)+(3*0)+(2*2)+(1*1)=97
97 % 10 = 7
So 4870-21-7 is a valid CAS Registry Number.

4870-21-7Relevant articles and documents

N-phenylation of N-arylaminophthalimides with triphenylbismuth and cupric acetate: A convenient synthesis of 1-aryl-1-phenylhydrazines

Aoki, Yutaka,Saito, Yuko,Sakamoto, Takeshi,Kikugawa, Yasuo

, p. 131 - 140 (2000)

Synthesis of 1-aryl-1-phenylhydrazines (2) from N-aryl-N- phenylaminophthalimides (1) which were synthesized by the phenylation of 1 with triphenylbismuth and cupric acetate is described.

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