65391-03-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 65391-03-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,3,9 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 65391-03:
(7*6)+(6*5)+(5*3)+(4*9)+(3*1)+(2*0)+(1*3)=129
129 % 10 = 9
So 65391-03-9 is a valid CAS Registry Number.