13139-30-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13139-30-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,1,3 and 9 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 13139-30:
(7*1)+(6*3)+(5*1)+(4*3)+(3*9)+(2*3)+(1*0)=75
75 % 10 = 5
So 13139-30-5 is a valid CAS Registry Number.