28642-58-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28642-58-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,6,4 and 2 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 28642-58:
(7*2)+(6*8)+(5*6)+(4*4)+(3*2)+(2*5)+(1*8)=132
132 % 10 = 2
So 28642-58-2 is a valid CAS Registry Number.