18089-55-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18089-55-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,0,8 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 18089-55:
(7*1)+(6*8)+(5*0)+(4*8)+(3*9)+(2*5)+(1*5)=129
129 % 10 = 9
So 18089-55-9 is a valid CAS Registry Number.