43169-99-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 43169-99-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,3,1,6 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 43169-99:
(7*4)+(6*3)+(5*1)+(4*6)+(3*9)+(2*9)+(1*9)=129
129 % 10 = 9
So 43169-99-9 is a valid CAS Registry Number.