616866-20-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 616866-20-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,1,6,8,6 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 616866-20:
(8*6)+(7*1)+(6*6)+(5*8)+(4*6)+(3*6)+(2*2)+(1*0)=177
177 % 10 = 7
So 616866-20-7 is a valid CAS Registry Number.