916811-99-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 916811-99-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,6,8,1 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 916811-99:
(8*9)+(7*1)+(6*6)+(5*8)+(4*1)+(3*1)+(2*9)+(1*9)=189
189 % 10 = 9
So 916811-99-9 is a valid CAS Registry Number.