55111-89-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55111-89-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,1,1 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 55111-89:
(7*5)+(6*5)+(5*1)+(4*1)+(3*1)+(2*8)+(1*9)=102
102 % 10 = 2
So 55111-89-2 is a valid CAS Registry Number.