789453-81-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 789453-81-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,8,9,4,5 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 789453-81:
(8*7)+(7*8)+(6*9)+(5*4)+(4*5)+(3*3)+(2*8)+(1*1)=232
232 % 10 = 2
So 789453-81-2 is a valid CAS Registry Number.