321172-99-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 321172-99-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,2,1,1,7 and 2 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 321172-99:
(8*3)+(7*2)+(6*1)+(5*1)+(4*7)+(3*2)+(2*9)+(1*9)=110
110 % 10 = 0
So 321172-99-0 is a valid CAS Registry Number.