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54243-53-7

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54243-53-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54243-53-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,2,4 and 3 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 54243-53:
(7*5)+(6*4)+(5*2)+(4*4)+(3*3)+(2*5)+(1*3)=107
107 % 10 = 7
So 54243-53-7 is a valid CAS Registry Number.

54243-53-7Relevant 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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