139691-74-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139691-74-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,9 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 139691-74:
(8*1)+(7*3)+(6*9)+(5*6)+(4*9)+(3*1)+(2*7)+(1*4)=170
170 % 10 = 0
So 139691-74-0 is a valid CAS Registry Number.