104509-76-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 104509-76-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,5,0 and 9 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 104509-76:
(8*1)+(7*0)+(6*4)+(5*5)+(4*0)+(3*9)+(2*7)+(1*6)=104
104 % 10 = 4
So 104509-76-4 is a valid CAS Registry Number.