789-23-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 789-23-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,8 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 789-23:
(5*7)+(4*8)+(3*9)+(2*2)+(1*3)=101
101 % 10 = 1
So 789-23-1 is a valid CAS Registry Number.