28491-54-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28491-54-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,4,9 and 1 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 28491-54:
(7*2)+(6*8)+(5*4)+(4*9)+(3*1)+(2*5)+(1*4)=135
135 % 10 = 5
So 28491-54-5 is a valid CAS Registry Number.