389-05-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 389-05-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,8 and 9 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 389-05:
(5*3)+(4*8)+(3*9)+(2*0)+(1*5)=79
79 % 10 = 9
So 389-05-9 is a valid CAS Registry Number.