254429-28-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 254429-28-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,4,4,2 and 9 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 254429-28:
(8*2)+(7*5)+(6*4)+(5*4)+(4*2)+(3*9)+(2*2)+(1*8)=142
142 % 10 = 2
So 254429-28-2 is a valid CAS Registry Number.