221316-48-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221316-48-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,3,1 and 6 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 221316-48:
(8*2)+(7*2)+(6*1)+(5*3)+(4*1)+(3*6)+(2*4)+(1*8)=89
89 % 10 = 9
So 221316-48-9 is a valid CAS Registry Number.