201019-99-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 201019-99-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,0,1 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 201019-99:
(8*2)+(7*0)+(6*1)+(5*0)+(4*1)+(3*9)+(2*9)+(1*9)=80
80 % 10 = 0
So 201019-99-0 is a valid CAS Registry Number.