139109-50-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139109-50-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,1,0 and 9 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 139109-50:
(8*1)+(7*3)+(6*9)+(5*1)+(4*0)+(3*9)+(2*5)+(1*0)=125
125 % 10 = 5
So 139109-50-5 is a valid CAS Registry Number.