173220-35-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 173220-35-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,2,2 and 0 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 173220-35:
(8*1)+(7*7)+(6*3)+(5*2)+(4*2)+(3*0)+(2*3)+(1*5)=104
104 % 10 = 4
So 173220-35-4 is a valid CAS Registry Number.