219997-59-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219997-59-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,9,9 and 7 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 219997-59:
(8*2)+(7*1)+(6*9)+(5*9)+(4*9)+(3*7)+(2*5)+(1*9)=198
198 % 10 = 8
So 219997-59-8 is a valid CAS Registry Number.