661-08-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 661-08-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,6 and 1 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 661-08:
(5*6)+(4*6)+(3*1)+(2*0)+(1*8)=65
65 % 10 = 5
So 661-08-5 is a valid CAS Registry Number.