66866-28-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66866-28-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,8,6 and 6 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 66866-28:
(7*6)+(6*6)+(5*8)+(4*6)+(3*6)+(2*2)+(1*8)=172
172 % 10 = 2
So 66866-28-2 is a valid CAS Registry Number.