139660-23-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139660-23-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,6 and 0 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 139660-23:
(8*1)+(7*3)+(6*9)+(5*6)+(4*6)+(3*0)+(2*2)+(1*3)=144
144 % 10 = 4
So 139660-23-4 is a valid CAS Registry Number.