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142087-23-8

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142087-23-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142087-23-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,0,8 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 142087-23:
(8*1)+(7*4)+(6*2)+(5*0)+(4*8)+(3*7)+(2*2)+(1*3)=108
108 % 10 = 8
So 142087-23-8 is a valid CAS Registry Number.

142087-23-8Relevant articles and documents

Mannich/Friedel-Crafts Preparations of 1-(Arylmethyl)benzotriazoles and Synthetic Transformations of their Lithio Derivatives

Katritzky, Alan R.,Gordeev, Mikhail F.,Greenhill, John V.,Steel, Peter J.

, p. 1111 - 1118 (2007/10/02)

The synthesis of 1-(arylmethyl)benzotriazoles by Mannich type reactions of benzene, toluene, p-xylene and chlorobenzene with 1-chloromethylbenzotriazole in the presence of aluminium halides is reported.Alkylation of their lithio derivatives followed by th

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