75172-73-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 75172-73-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,1,7 and 2 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 75172-73:
(7*7)+(6*5)+(5*1)+(4*7)+(3*2)+(2*7)+(1*3)=135
135 % 10 = 5
So 75172-73-5 is a valid CAS Registry Number.