17662-73-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17662-73-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,6,6 and 2 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 17662-73:
(7*1)+(6*7)+(5*6)+(4*6)+(3*2)+(2*7)+(1*3)=126
126 % 10 = 6
So 17662-73-6 is a valid CAS Registry Number.