89789-84-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89789-84-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,7,8 and 9 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 89789-84:
(7*8)+(6*9)+(5*7)+(4*8)+(3*9)+(2*8)+(1*4)=224
224 % 10 = 4
So 89789-84-4 is a valid CAS Registry Number.