139157-64-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139157-64-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,1,5 and 7 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 139157-64:
(8*1)+(7*3)+(6*9)+(5*1)+(4*5)+(3*7)+(2*6)+(1*4)=145
145 % 10 = 5
So 139157-64-5 is a valid CAS Registry Number.