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3-[(triphenyl-λ5-phosphanylidene)amino]benzonitrile is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

18523-49-4

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18523-49-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18523-49-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,5,2 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 18523-49:
(7*1)+(6*8)+(5*5)+(4*2)+(3*3)+(2*4)+(1*9)=114
114 % 10 = 4
So 18523-49-4 is a valid CAS Registry Number.

18523-49-4Relevant academic research and scientific papers

The preparation of 1,2,3-trisubstituted guanidines

Katritzky, Alan R.,Khashab, Niveen M.,Bobrov, Sergey

, p. 1664 - 1675 (2005)

An operationally straightforward and efficient benzotriazole-based method for the guanylation of diverse amines by use of the new reagent classes (bis-benzotriazol-1-yl-methylene)amines 13a-13f and benzotriazole-1- carboxamidines 17a-17i is described. The preparation is described for a variety of both acyclic and cyclic 1,2,3-trisubstituted guanidines in high yields.

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