3509-75-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3509-75-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,5,0 and 9 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 3509-75:
(6*3)+(5*5)+(4*0)+(3*9)+(2*7)+(1*5)=89
89 % 10 = 9
So 3509-75-9 is a valid CAS Registry Number.