16628-28-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16628-28-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,6,2 and 8 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 16628-28:
(7*1)+(6*6)+(5*6)+(4*2)+(3*8)+(2*2)+(1*8)=117
117 % 10 = 7
So 16628-28-7 is a valid CAS Registry Number.