172332-99-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172332-99-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,3,3 and 2 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 172332-99:
(8*1)+(7*7)+(6*2)+(5*3)+(4*3)+(3*2)+(2*9)+(1*9)=129
129 % 10 = 9
So 172332-99-9 is a valid CAS Registry Number.