40031-69-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40031-69-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,0,3 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 40031-69:
(7*4)+(6*0)+(5*0)+(4*3)+(3*1)+(2*6)+(1*9)=64
64 % 10 = 4
So 40031-69-4 is a valid CAS Registry Number.