500309-65-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 500309-65-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,0,3,0 and 9 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 500309-65:
(8*5)+(7*0)+(6*0)+(5*3)+(4*0)+(3*9)+(2*6)+(1*5)=99
99 % 10 = 9
So 500309-65-9 is a valid CAS Registry Number.