66116-81-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66116-81-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,1,1 and 6 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 66116-81:
(7*6)+(6*6)+(5*1)+(4*1)+(3*6)+(2*8)+(1*1)=122
122 % 10 = 2
So 66116-81-2 is a valid CAS Registry Number.