22197-31-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22197-31-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,1,9 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 22197-31:
(7*2)+(6*2)+(5*1)+(4*9)+(3*7)+(2*3)+(1*1)=95
95 % 10 = 5
So 22197-31-5 is a valid CAS Registry Number.
22197-31-5Relevant articles and documents
Polyether ketone, its monomer and its phenolate
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Page/Page column 9, (2009/10/06)
A process for the preparation of an alkali metal salt of 4-chloro-4'-hydroxy benzophenone comprising of the steps of (a) preparing purified 4-chloro-4'-hydroxy benzophenone by a process comprising distilling under reduced pressure a liquid containing 4-ch
