17662-32-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 17662-32-7 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, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 17662-32:
(7*1)+(6*7)+(5*6)+(4*6)+(3*2)+(2*3)+(1*2)=117
117 % 10 = 7
So 17662-32-7 is a valid CAS Registry Number.