10509-16-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 10509-16-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,0,5,0 and 9 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 10509-16:
(7*1)+(6*0)+(5*5)+(4*0)+(3*9)+(2*1)+(1*6)=67
67 % 10 = 7
So 10509-16-7 is a valid CAS Registry Number.