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83215-16-1

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83215-16-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83215-16-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,2,1 and 5 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 83215-16:
(7*8)+(6*3)+(5*2)+(4*1)+(3*5)+(2*1)+(1*6)=111
111 % 10 = 1
So 83215-16-1 is a valid CAS Registry Number.

83215-16-1Relevant articles and documents

TRINUCLEAR INTERMEDIATES IN ANILINE-FORMALDEHYDE CONDENSATION

Ringel', Kh.,Popov, L.K.,Ushakova, M.B.

, p. 882 - 885 (2007/10/02)

The trinuclear intermediate products 4-(4-anilinomethylanilinomethyl)aniline and 4-aniline were isolated and identified by TLC during investigation of the aniline-formaldehyde condensation in the presence of acidic catalysts.The transformation of these compounds and of 4-anilinomethylaniline in methanol and under the conditions of acid aniline-formaldehyde condensation and rearrangement are described.It was established that the fromation of polyamines is possible not only as a result of the initial reaction of the final diamines with formaldehyde but also of the reaction of protonated anilinomethylanilines with aromatic amines present in the reaction mixture.

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