67447-23-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 67447-23-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,4,4 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 67447-23:
(7*6)+(6*7)+(5*4)+(4*4)+(3*7)+(2*2)+(1*3)=148
148 % 10 = 8
So 67447-23-8 is a valid CAS Registry Number.
67447-23-8Relevant articles and documents
Process for preparing aryl sulfone sulfonic acids
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, (2008/06/13)
A process for preparing aryl sulfone sulfonic acids by reacting an aryl sulfone in the molten state with sulfur trioxide under substantially anhydrous conditions.
