139163-34-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139163-34-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,1,6 and 3 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 139163-34:
(8*1)+(7*3)+(6*9)+(5*1)+(4*6)+(3*3)+(2*3)+(1*4)=131
131 % 10 = 1
So 139163-34-1 is a valid CAS Registry Number.