139-09-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139-09-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,3 and 9 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139-09:
(5*1)+(4*3)+(3*9)+(2*0)+(1*9)=53
53 % 10 = 3
So 139-09-3 is a valid CAS Registry Number.