204197-22-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 204197-22-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,1,9 and 7 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 204197-22:
(8*2)+(7*0)+(6*4)+(5*1)+(4*9)+(3*7)+(2*2)+(1*2)=108
108 % 10 = 8
So 204197-22-8 is a valid CAS Registry Number.