99866-80-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99866-80-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,6 and 6 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 99866-80:
(7*9)+(6*9)+(5*8)+(4*6)+(3*6)+(2*8)+(1*0)=215
215 % 10 = 5
So 99866-80-5 is a valid CAS Registry Number.