66800-71-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66800-71-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,8,0 and 0 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 66800-71:
(7*6)+(6*6)+(5*8)+(4*0)+(3*0)+(2*7)+(1*1)=133
133 % 10 = 3
So 66800-71-3 is a valid CAS Registry Number.