225517-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 225517-21-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,5,5,1 and 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 225517-21:
(8*2)+(7*2)+(6*5)+(5*5)+(4*1)+(3*7)+(2*2)+(1*1)=115
115 % 10 = 5
So 225517-21-5 is a valid CAS Registry Number.