28509-35-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28509-35-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,5,0 and 9 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 28509-35:
(7*2)+(6*8)+(5*5)+(4*0)+(3*9)+(2*3)+(1*5)=125
125 % 10 = 5
So 28509-35-5 is a valid CAS Registry Number.