667428-17-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667428-17-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,4,2 and 8 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 667428-17:
(8*6)+(7*6)+(6*7)+(5*4)+(4*2)+(3*8)+(2*1)+(1*7)=193
193 % 10 = 3
So 667428-17-3 is a valid CAS Registry Number.