228120-16-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 228120-16-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,8,1,2 and 0 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 228120-16:
(8*2)+(7*2)+(6*8)+(5*1)+(4*2)+(3*0)+(2*1)+(1*6)=99
99 % 10 = 9
So 228120-16-9 is a valid CAS Registry Number.