28160-66-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28160-66-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,1,6 and 0 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 28160-66:
(7*2)+(6*8)+(5*1)+(4*6)+(3*0)+(2*6)+(1*6)=109
109 % 10 = 9
So 28160-66-9 is a valid CAS Registry Number.