666818-01-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 666818-01-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,6,8,1 and 8 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 666818-01:
(8*6)+(7*6)+(6*6)+(5*8)+(4*1)+(3*8)+(2*0)+(1*1)=195
195 % 10 = 5
So 666818-01-5 is a valid CAS Registry Number.