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71972-85-5

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71972-85-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71972-85-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,9,7 and 2 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 71972-85:
(7*7)+(6*1)+(5*9)+(4*7)+(3*2)+(2*8)+(1*5)=155
155 % 10 = 5
So 71972-85-5 is a valid CAS Registry Number.

71972-85-5Relevant articles and documents

Intramolecular Nitrene Insertions into Aromatic and Heteroaromatic Systems. Part 6. Insertion with o-Nitrenophenyldithienyl methanes.

Hayes, Peter C.,Jones, Gurnos,Keates, Claire,Kladko, Irene,Radley, Peter

, p. 3523 - 3535 (2007/10/02)

The preparation of four o-nitrophenyldithienylmethanes (2a) - (2d), and of the amines (3a) and (3d), and azides (4a) and (4d) is described.Deoxygenation of the nitro compounds, or decomposition of the azides, gave 2-aminophenyldithienylmethanes (3a) - (3d

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