7673-17-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7673-17-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,7 and 3 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7673-17:
(6*7)+(5*6)+(4*7)+(3*3)+(2*1)+(1*7)=118
118 % 10 = 8
So 7673-17-8 is a valid CAS Registry Number.