40539-67-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40539-67-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,5,3 and 9 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 40539-67:
(7*4)+(6*0)+(5*5)+(4*3)+(3*9)+(2*6)+(1*7)=111
111 % 10 = 1
So 40539-67-1 is a valid CAS Registry Number.