55666-89-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55666-89-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,6,6 and 6 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 55666-89:
(7*5)+(6*5)+(5*6)+(4*6)+(3*6)+(2*8)+(1*9)=162
162 % 10 = 2
So 55666-89-2 is a valid CAS Registry Number.