6422-83-9 Usage
Flammability and Explosibility
Notclassified
Check Digit Verification of cas no
The CAS Registry Mumber 6422-83-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,2 and 2 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 6422-83:
(6*6)+(5*4)+(4*2)+(3*2)+(2*8)+(1*3)=89
89 % 10 = 9
So 6422-83-9 is a valid CAS Registry Number.
6422-83-9Relevant articles and documents
Process for the preparation of aromatic maleimides
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, (2008/06/13)
Aromatic maleimides can be prepared by reacting corresponding aromatic amines with maleic anhydride in the presence of a solvent mixture of halogenated hydrocarbon and a dipolar aprotic solvent, with the addition of acid and a polymerization inhibitor.