9005-28-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 9005-28-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,0 and 5 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 9005-28:
(6*9)+(5*0)+(4*0)+(3*5)+(2*2)+(1*8)=81
81 % 10 = 1
So 9005-28-1 is a valid CAS Registry Number.