78164-89-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78164-89-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,1,6 and 4 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 78164-89:
(7*7)+(6*8)+(5*1)+(4*6)+(3*4)+(2*8)+(1*9)=163
163 % 10 = 3
So 78164-89-3 is a valid CAS Registry Number.