139257-43-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139257-43-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,2,5 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 139257-43:
(8*1)+(7*3)+(6*9)+(5*2)+(4*5)+(3*7)+(2*4)+(1*3)=145
145 % 10 = 5
So 139257-43-5 is a valid CAS Registry Number.