55489-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55489-71-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,4,8 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 55489-71:
(7*5)+(6*5)+(5*4)+(4*8)+(3*9)+(2*7)+(1*1)=159
159 % 10 = 9
So 55489-71-9 is a valid CAS Registry Number.