66311-89-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66311-89-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,3,1 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 66311-89:
(7*6)+(6*6)+(5*3)+(4*1)+(3*1)+(2*8)+(1*9)=125
125 % 10 = 5
So 66311-89-5 is a valid CAS Registry Number.