25111-61-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 25111-61-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,1,1 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 25111-61:
(7*2)+(6*5)+(5*1)+(4*1)+(3*1)+(2*6)+(1*1)=69
69 % 10 = 9
So 25111-61-9 is a valid CAS Registry Number.