28665-88-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28665-88-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,6,6 and 5 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 28665-88:
(7*2)+(6*8)+(5*6)+(4*6)+(3*5)+(2*8)+(1*8)=155
155 % 10 = 5
So 28665-88-5 is a valid CAS Registry Number.