89915-55-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89915-55-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,9,1 and 5 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 89915-55:
(7*8)+(6*9)+(5*9)+(4*1)+(3*5)+(2*5)+(1*5)=189
189 % 10 = 9
So 89915-55-9 is a valid CAS Registry Number.