25-51-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 25-51-4 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 2 and 5 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 25-51:
(4*2)+(3*5)+(2*5)+(1*1)=34
34 % 10 = 4
So 25-51-4 is a valid CAS Registry Number.