39961-89-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 39961-89-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,9,6 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 39961-89:
(7*3)+(6*9)+(5*9)+(4*6)+(3*1)+(2*8)+(1*9)=172
172 % 10 = 2
So 39961-89-2 is a valid CAS Registry Number.