221024-28-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221024-28-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,0,2 and 4 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 221024-28:
(8*2)+(7*2)+(6*1)+(5*0)+(4*2)+(3*4)+(2*2)+(1*8)=68
68 % 10 = 8
So 221024-28-8 is a valid CAS Registry Number.