28-51-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28-51-3 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 2 and 8 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 28-51:
(4*2)+(3*8)+(2*5)+(1*1)=43
43 % 10 = 3
So 28-51-3 is a valid CAS Registry Number.