28507-80-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28507-80-4 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 7 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 28507-80:
(7*2)+(6*8)+(5*5)+(4*0)+(3*7)+(2*8)+(1*0)=124
124 % 10 = 4
So 28507-80-4 is a valid CAS Registry Number.