28642-93-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28642-93-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,6,4 and 2 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 28642-93:
(7*2)+(6*8)+(5*6)+(4*4)+(3*2)+(2*9)+(1*3)=135
135 % 10 = 5
So 28642-93-5 is a valid CAS Registry Number.