89984-56-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89984-56-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,9,8 and 4 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 89984-56:
(7*8)+(6*9)+(5*9)+(4*8)+(3*4)+(2*5)+(1*6)=215
215 % 10 = 5
So 89984-56-5 is a valid CAS Registry Number.