99809-72-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99809-72-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,0 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 99809-72:
(7*9)+(6*9)+(5*8)+(4*0)+(3*9)+(2*7)+(1*2)=200
200 % 10 = 0
So 99809-72-0 is a valid CAS Registry Number.