139171-68-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139171-68-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,1,7 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 139171-68:
(8*1)+(7*3)+(6*9)+(5*1)+(4*7)+(3*1)+(2*6)+(1*8)=139
139 % 10 = 9
So 139171-68-9 is a valid CAS Registry Number.