389838-05-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 389838-05-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,8,9,8,3 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 389838-05:
(8*3)+(7*8)+(6*9)+(5*8)+(4*3)+(3*8)+(2*0)+(1*5)=215
215 % 10 = 5
So 389838-05-5 is a valid CAS Registry Number.