28033-69-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28033-69-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,0,3 and 3 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 28033-69:
(7*2)+(6*8)+(5*0)+(4*3)+(3*3)+(2*6)+(1*9)=104
104 % 10 = 4
So 28033-69-4 is a valid CAS Registry Number.