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81256-24-8

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81256-24-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81256-24-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,2,5 and 6 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 81256-24:
(7*8)+(6*1)+(5*2)+(4*5)+(3*6)+(2*2)+(1*4)=118
118 % 10 = 8
So 81256-24-8 is a valid CAS Registry Number.

81256-24-8Relevant articles and documents

Substitution at Tetracoordinate Sulfur(VI). Rearrangement of 2-Aminoaryl Arenesulfonates to N-(2-Hydroxyaryl)arenesulfonamides

Andersen, Kenneth K.,Gowda, Gopala,Jewell, Linda,McGraw, Phillip,Phillips, Brian T.

, p. 1884 - 1889 (2007/10/02)

A series of eight 2-aminoaryl arenesulfonates upon treatment by strong bases rearranged intramolecularly to their corresponding N-(2-hydroxyaryl)arenesulfonamides as did the related tosylates derived from 2-amino-3-hydroxypyridine, 1-amino-2-naphthol, and

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