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93424-90-9

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93424-90-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 93424-90-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,4,2 and 4 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 93424-90:
(7*9)+(6*3)+(5*4)+(4*2)+(3*4)+(2*9)+(1*0)=139
139 % 10 = 9
So 93424-90-9 is a valid CAS Registry Number.

93424-90-9Relevant articles and documents

Polycondensed Nitrogen Heterocycles. Part 13 . Pyrroloindole by Intramolecular Nucleophilic Substitution Reaction in the Pyrrole Series

Aiello, E.,Dattolo, G.,Cirrincione, G.,Almerico, A. M.

, p. 721 - 724 (2007/10/02)

An intramolecular nucleophilic substitution in the pyrrole series has been generalized.The behaviour of nitro, chlorine, bromine and iodine as leaving groups towards the nucleophilic amino group was observed.An acid catalyzed mechanism has been proposed.

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